2f9d98cab2
Note: The `SIOCSIFADDR` and `SIOCDIFADDR` uses different params for `AF_INET` and `AF_INET6` (`struct ifreq` vs `struct in6_ifreq`) as defined by https://man7.org/linux/man-pages/man7/netdevice.7.html Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/****************************************************************************
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* apps/netutils/netlib/netlib_delipv6addr.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_NETDEV_MULTIPLE_IPv6
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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_del_ipv6addr
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*
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* Description:
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* Remove an IPv6 address from the network driver
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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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* ipaddr The address to delete
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* preflen The prefix length of the address
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*
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* Return:
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* 0 on success; -1 on failure
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*
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****************************************************************************/
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int netlib_del_ipv6addr(FAR const char *ifname,
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FAR const struct in6_addr *addr, uint8_t preflen)
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{
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int ret = ERROR;
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if (ifname && addr)
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{
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int sockfd = socket(AF_INET6, NET_SOCK_TYPE, NET_SOCK_PROTOCOL);
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if (sockfd >= 0)
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{
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struct ifreq req;
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struct in6_ifreq ifr6;
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/* Add the device name to the request */
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strlcpy(req.ifr_name, ifname, IFNAMSIZ);
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/* Get interface index */
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ret = ioctl(sockfd, SIOCGIFINDEX,
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((unsigned long)(uintptr_t)&req));
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if (ret == OK)
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{
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/* Delete address from the interface. */
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ifr6.ifr6_ifindex = req.ifr_ifindex;
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ifr6.ifr6_prefixlen = preflen;
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memcpy(&ifr6.ifr6_addr, addr, sizeof(struct in6_addr));
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ret = ioctl(sockfd, SIOCDIFADDR,
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((unsigned long)(uintptr_t)&ifr6));
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}
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close(sockfd);
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}
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}
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return ret;
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}
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#endif /* CONFIG_NETDEV_MULTIPLE_IPv6 */
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