120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/****************************************************************************
|
|
* net/netdev/netdev_indextoname.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 <string.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
|
|
#include <net/if.h>
|
|
|
|
#include "nuttx/net/net.h"
|
|
#include "nuttx/net/netdev.h"
|
|
|
|
#include "netdev/netdev.h"
|
|
|
|
#ifdef CONFIG_NETDEV_IFINDEX
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: netdev_indextoname
|
|
*
|
|
* Description:
|
|
* The if_indextoname() function maps an interface index to its
|
|
* corresponding name.
|
|
*
|
|
* Input Parameters:
|
|
* ifname - Points to a buffer of at least IF_NAMESIZE bytes.
|
|
* if_indextoname() will place in this buffer the name of the
|
|
* interface with index ifindex.
|
|
*
|
|
* Returned Value:
|
|
* If ifindex is an interface index, then the function will return zero
|
|
* (OK). Otherwise, the function returns a negated errno value;
|
|
*
|
|
****************************************************************************/
|
|
|
|
int netdev_indextoname(unsigned int ifindex, FAR char *ifname)
|
|
{
|
|
FAR struct net_driver_s *dev;
|
|
int ret = -ENODEV;
|
|
|
|
DEBUGASSERT(ifindex > 0 && ifindex <= MAX_IFINDEX);
|
|
DEBUGASSERT(ifname != NULL);
|
|
|
|
/* Find the driver with this name */
|
|
|
|
net_lock();
|
|
dev = netdev_findbyindex(ifindex);
|
|
if (dev != NULL)
|
|
{
|
|
memcpy(ifname, dev->d_ifname, IF_NAMESIZE);
|
|
ret = OK;
|
|
}
|
|
|
|
net_unlock();
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: if_indextoname
|
|
*
|
|
* Description:
|
|
* The if_indextoname() function maps an interface index to its
|
|
* corresponding name.
|
|
*
|
|
* Input Parameters:
|
|
* ifname - Points to a buffer of at least IF_NAMESIZE bytes.
|
|
* if_indextoname() will place in this buffer the name of the
|
|
* interface with index ifindex.
|
|
*
|
|
* Returned Value:
|
|
* If ifindex is an interface index, then the function will return the
|
|
* value supplied by ifname. Otherwise, the function returns a NULL pointer
|
|
* and sets errno to indicate the error.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR char *if_indextoname(unsigned int ifindex, FAR char *ifname)
|
|
{
|
|
int ret;
|
|
|
|
/* Let netdev_indextoname to the work */
|
|
|
|
ret = netdev_indextoname(ifindex, ifname);
|
|
if (ret < 0)
|
|
{
|
|
set_errno(-ret);
|
|
return NULL;
|
|
}
|
|
|
|
return ifname;
|
|
}
|
|
|
|
#endif /* CONFIG_NETDEV_IFINDEX */
|