/*
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* hostapd / VLAN ifconfig helpers
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* Copyright 2003, Instant802 Networks, Inc.
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* Copyright 2005-2006, Devicescape Software, Inc.
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* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include "utils/common.h"
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#include "vlan_util.h"
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int ifconfig_helper(const char *if_name, int up)
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{
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int fd;
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struct ifreq ifr;
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if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
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"failed: %s", __func__, strerror(errno));
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return -1;
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}
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os_memset(&ifr, 0, sizeof(ifr));
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os_strlcpy(ifr.ifr_name, if_name, IFNAMSIZ);
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if (ioctl(fd, SIOCGIFFLAGS, &ifr) != 0) {
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wpa_printf(MSG_ERROR, "VLAN: %s: ioctl(SIOCGIFFLAGS) failed "
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"for interface %s: %s",
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__func__, if_name, strerror(errno));
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close(fd);
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return -1;
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}
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if (up)
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ifr.ifr_flags |= IFF_UP;
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else
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ifr.ifr_flags &= ~IFF_UP;
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if (ioctl(fd, SIOCSIFFLAGS, &ifr) != 0) {
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wpa_printf(MSG_ERROR, "VLAN: %s: ioctl(SIOCSIFFLAGS) failed "
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"for interface %s (up=%d): %s",
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__func__, if_name, up, strerror(errno));
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close(fd);
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return -1;
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}
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close(fd);
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return 0;
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}
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int ifconfig_up(const char *if_name)
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{
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wpa_printf(MSG_DEBUG, "VLAN: Set interface %s up", if_name);
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return ifconfig_helper(if_name, 1);
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}
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int iface_exists(const char *ifname)
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{
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return if_nametoindex(ifname);
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}
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