109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/****************************************************************************
|
|
* netutils/netlib/netlib_setarp.c
|
|
*
|
|
* Copyright (C) 2016 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>
|
|
#ifdef CONFIG_NET_ARP
|
|
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <net/if.h>
|
|
|
|
#include <nuttx/net/arp.h>
|
|
#include "netutils/netlib.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: netlib_set_arpmapping
|
|
*
|
|
* Description:
|
|
* Add the current hardware address mapping for the provided protocol
|
|
* address to the ARP table.
|
|
*
|
|
* Parameters:
|
|
* inaddr The IPv4 address to use in the mapping
|
|
* macaddr The Ethernet MAC address to use in the mapping
|
|
*
|
|
* Return:
|
|
* 0 on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int netlib_set_arpmapping(FAR const struct sockaddr_in *inaddr,
|
|
FAR const uint8_t *macaddr)
|
|
{
|
|
int ret = -EINVAL;
|
|
|
|
if (inaddr != NULL && macaddr != NULL)
|
|
{
|
|
int sockfd = socket(PF_INET, NETLIB_SOCK_TYPE, 0);
|
|
if (sockfd >= 0)
|
|
{
|
|
struct arpreq req;
|
|
|
|
memcpy(&req.arp_pa, inaddr, sizeof(struct sockaddr_in));
|
|
|
|
req.arp_ha.sa_family = ARPHRD_ETHER;
|
|
memcpy(&req.arp_ha.sa_data, macaddr, ETHER_ADDR_LEN);
|
|
|
|
ret = ioctl(sockfd, SIOCSARP, (unsigned long)((uintptr_t)&req));
|
|
if (ret < 0)
|
|
{
|
|
ret = -errno;
|
|
DEBUGASSERT(ret < 0);
|
|
}
|
|
|
|
close(sockfd);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_NET_ARP */
|