2 * Linux ioctl helper functions for driver wrappers
3 * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #include "utils/includes.h"
16 #include <sys/ioctl.h>
18 #include <net/if_arp.h>
20 #include "utils/common.h"
21 #include "linux_ioctl.h"
24 int linux_set_iface_flags(int sock, const char *ifname, int dev_up)
31 os_memset(&ifr, 0, sizeof(ifr));
32 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
34 if (ioctl(sock, SIOCGIFFLAGS, &ifr) != 0) {
35 wpa_printf(MSG_ERROR, "Could not read interface %s flags: %s",
36 ifname, strerror(errno));
41 if (ifr.ifr_flags & IFF_UP)
43 ifr.ifr_flags |= IFF_UP;
45 if (!(ifr.ifr_flags & IFF_UP))
47 ifr.ifr_flags &= ~IFF_UP;
50 if (ioctl(sock, SIOCSIFFLAGS, &ifr) != 0) {
51 wpa_printf(MSG_ERROR, "Could not set interface %s flags: %s",
52 ifname, strerror(errno));
60 int linux_get_ifhwaddr(int sock, const char *ifname, u8 *addr)
64 os_memset(&ifr, 0, sizeof(ifr));
65 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
66 if (ioctl(sock, SIOCGIFHWADDR, &ifr)) {
67 wpa_printf(MSG_ERROR, "Could not get interface %s hwaddr: %s",
68 ifname, strerror(errno));
72 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
73 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
74 ifname, ifr.ifr_hwaddr.sa_family);
77 os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
83 int linux_set_ifhwaddr(int sock, const char *ifname, const u8 *addr)
87 os_memset(&ifr, 0, sizeof(ifr));
88 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
89 os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
90 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
92 if (ioctl(sock, SIOCSIFHWADDR, &ifr)) {
93 wpa_printf(MSG_DEBUG, "Could not set interface %s hwaddr: %s",
94 ifname, strerror(errno));
103 #define SIOCBRADDBR 0x89a0
106 #define SIOCBRDELBR 0x89a1
109 #define SIOCBRADDIF 0x89a2
112 #define SIOCBRDELIF 0x89a3
116 int linux_br_add(int sock, const char *brname)
118 if (ioctl(sock, SIOCBRADDBR, brname) < 0) {
119 wpa_printf(MSG_DEBUG, "Could not add bridge %s: %s",
120 brname, strerror(errno));
128 int linux_br_del(int sock, const char *brname)
130 if (ioctl(sock, SIOCBRDELBR, brname) < 0) {
131 wpa_printf(MSG_DEBUG, "Could not remove bridge %s: %s",
132 brname, strerror(errno));
140 int linux_br_add_if(int sock, const char *brname, const char *ifname)
145 ifindex = if_nametoindex(ifname);
149 os_memset(&ifr, 0, sizeof(ifr));
150 os_strlcpy(ifr.ifr_name, brname, IFNAMSIZ);
151 ifr.ifr_ifindex = ifindex;
152 if (ioctl(sock, SIOCBRADDIF, &ifr) < 0) {
153 wpa_printf(MSG_DEBUG, "Could not add interface %s into bridge "
154 "%s: %s", ifname, brname, strerror(errno));
162 int linux_br_del_if(int sock, const char *brname, const char *ifname)
167 ifindex = if_nametoindex(ifname);
171 os_memset(&ifr, 0, sizeof(ifr));
172 os_strlcpy(ifr.ifr_name, brname, IFNAMSIZ);
173 ifr.ifr_ifindex = ifindex;
174 if (ioctl(sock, SIOCBRDELIF, &ifr) < 0) {
175 wpa_printf(MSG_DEBUG, "Could not remove interface %s from "
176 "bridge %s: %s", ifname, brname, strerror(errno));
184 int linux_br_get(char *brname, const char *ifname)
186 char path[128], brlink[128], *pos;
187 os_snprintf(path, sizeof(path), "/sys/class/net/%s/brport/bridge",
189 os_memset(brlink, 0, sizeof(brlink));
190 if (readlink(path, brlink, sizeof(brlink) - 1) < 0)
192 pos = os_strrchr(brlink, '/');
196 os_strlcpy(brname, pos, IFNAMSIZ);