cfc005a460
and change the remain inclusion to netinet/arp.h Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/****************************************************************************
|
|
* apps/netutils/netlib/netlib_getarp.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>
|
|
#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/arp.h>
|
|
#include <netinet/in.h>
|
|
#include <net/if.h>
|
|
|
|
#include "netutils/netlib.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: netlib_get_arpmapping
|
|
*
|
|
* Description:
|
|
* Get the current hardware address mapping for the provided protocol
|
|
* address from the ARP table.
|
|
*
|
|
* Parameters:
|
|
* inaddr The IPv4 address to use in the query
|
|
* macaddr The location to return the mapped Ethernet MAC address
|
|
* ifname The Network device name
|
|
*
|
|
* Return:
|
|
* 0 on success; a negated errno value on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int netlib_get_arpmapping(FAR const struct sockaddr_in *inaddr,
|
|
FAR uint8_t *macaddr, FAR const char *ifname)
|
|
{
|
|
int ret = -EINVAL;
|
|
|
|
if (inaddr != NULL && macaddr != NULL)
|
|
{
|
|
int sockfd = socket(NET_SOCK_FAMILY, NET_SOCK_TYPE, NET_SOCK_PROTOCOL);
|
|
if (sockfd >= 0)
|
|
{
|
|
struct arpreq req;
|
|
|
|
memcpy(&req.arp_pa, inaddr, sizeof(struct sockaddr_in));
|
|
if (ifname != NULL)
|
|
{
|
|
strlcpy((FAR char *)&req.arp_dev, ifname,
|
|
sizeof(req.arp_dev));
|
|
}
|
|
else
|
|
{
|
|
req.arp_dev[0] = '\0';
|
|
}
|
|
|
|
ret = ioctl(sockfd, SIOCGARP, (unsigned long)((uintptr_t)&req));
|
|
if (ret < 0)
|
|
{
|
|
ret = -errno;
|
|
DEBUGASSERT(ret < 0);
|
|
}
|
|
else
|
|
{
|
|
DEBUGASSERT(req.arp_ha.sa_family == ARPHRD_ETHER);
|
|
memcpy(macaddr, req.arp_ha.sa_data, ETHER_ADDR_LEN);
|
|
ret = OK;
|
|
}
|
|
|
|
close(sockfd);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* CONFIG_NET_ARP */
|