2 * hostapd / VLAN ifconfig helpers
3 * Copyright 2003, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
7 * This software may be distributed under the terms of the BSD license.
8 * See README for more details.
11 #include "utils/includes.h"
13 #include <sys/ioctl.h>
15 #include "utils/common.h"
16 #include "vlan_util.h"
19 int ifconfig_helper(const char *if_name, int up)
24 if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
25 wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
26 "failed: %s", __func__, strerror(errno));
30 os_memset(&ifr, 0, sizeof(ifr));
31 os_strlcpy(ifr.ifr_name, if_name, IFNAMSIZ);
33 if (ioctl(fd, SIOCGIFFLAGS, &ifr) != 0) {
34 wpa_printf(MSG_ERROR, "VLAN: %s: ioctl(SIOCGIFFLAGS) failed "
35 "for interface %s: %s",
36 __func__, if_name, strerror(errno));
42 ifr.ifr_flags |= IFF_UP;
44 ifr.ifr_flags &= ~IFF_UP;
46 if (ioctl(fd, SIOCSIFFLAGS, &ifr) != 0) {
47 wpa_printf(MSG_ERROR, "VLAN: %s: ioctl(SIOCSIFFLAGS) failed "
48 "for interface %s (up=%d): %s",
49 __func__, if_name, up, strerror(errno));
59 int ifconfig_up(const char *if_name)
61 wpa_printf(MSG_DEBUG, "VLAN: Set interface %s up", if_name);
62 return ifconfig_helper(if_name, 1);
66 int iface_exists(const char *ifname)
68 return if_nametoindex(ifname);