110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/****************************************************************************
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* net/netdev/netdev_nametoindex.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <errno.h>
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#include <net/if.h>
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#include "nuttx/net/net.h"
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#include "nuttx/net/netdev.h"
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#include "netdev/netdev.h"
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#ifdef CONFIG_NETDEV_IFINDEX
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netdev_nametoindex
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*
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* Description:
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* The if_nametoindex() function returns the interface index corresponding
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* to name ifname.
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*
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* Input Parameters:
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* ifname - The interface name
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*
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* Returned Value:
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* The corresponding index if ifname is the name of an interface;
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* otherwise, a negated errno value is returned.
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*
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****************************************************************************/
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unsigned int netdev_nametoindex(FAR const char *ifname)
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{
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FAR struct net_driver_s *dev;
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unsigned int ifindex = -ENODEV;
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/* Find the driver with this name */
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net_lock();
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dev = netdev_findbyname(ifname);
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if (dev != NULL)
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{
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ifindex = dev->d_ifindex;
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}
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net_unlock();
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return ifindex;
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}
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/****************************************************************************
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* Name: if_nametoindex
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*
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* Description:
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* The if_nametoindex() function returns the interface index corresponding
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* to name ifname.
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*
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* Input Parameters:
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* ifname - The interface name
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*
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* Returned Value:
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* The corresponding index if ifname is the name of an interface;
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* otherwise, zero. Although not specified, the errno value will be set.
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*
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****************************************************************************/
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unsigned int if_nametoindex(FAR const char *ifname)
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{
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int ret;
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/* Let netdev_nametoindex to the work */
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ret = netdev_nametoindex(ifname);
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if (ret < 0)
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{
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set_errno(-ret);
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return 0;
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}
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return ret;
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}
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#endif /* CONFIG_NETDEV_IFINDEX */
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