94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/****************************************************************************
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* netutils/netlib/netlib_autoconfig.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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#ifdef CONFIG_NET_ICMPv6_AUTOCONF
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include "netutils/netlib.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netlib_icmpv6_autoconfiguration
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*
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* Description:
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* Perform ICMPv6 auto-configuration in an attempt to get the IP address
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* of the specified network device.
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*
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* Parameters:
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* ifname The name of the interface to use
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*
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* Return:
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* 0 on success; -1 on failure (with the errno variable set appropriately)
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*
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****************************************************************************/
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int netlib_icmpv6_autoconfiguration(FAR const char *ifname)
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{
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int ret = ERROR;
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/* Verify that an interface name was provided */
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if (ifname)
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{
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/* Get an IPv6 socket */
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int sockfd = socket(PF_INET6, NETLIB_SOCK_TYPE, 0);
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if (sockfd >= 0)
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{
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/* Create a request consisting only of the interface name */
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struct lifreq req;
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strncpy(req.lifr_name, ifname, IFNAMSIZ);
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/* Perform the ICMPv6 auto-configuration and close the socket */
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ret = ioctl(sockfd, SIOCIFAUTOCONF,
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(unsigned long)((uintptr_t)&req));
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close(sockfd);
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}
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}
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else
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{
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/* No interface name */
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errno = EINVAL;
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}
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return ret;
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}
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#endif /* CONFIG_NET_ICMPv6_AUTOCONF */
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