2 * hostapd / VLAN netlink api
3 * Copyright (c) 2012, Michael Braun <michael-dev@fami-braun.de>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
10 #include <netlink/route/link.h>
11 #include <netlink/route/link/vlan.h>
13 #include "utils/common.h"
14 #include "vlan_util.h"
17 * Add a vlan interface with name 'vlan_if_name', VLAN ID 'vid' and
18 * tagged interface 'if_name'.
21 * returns 1 if the interface already exists
24 int vlan_add(const char *if_name, int vid, const char *vlan_if_name)
27 struct nl_sock *handle = NULL;
28 struct rtnl_link *rlink = NULL;
31 wpa_printf(MSG_DEBUG, "VLAN: vlan_add(if_name=%s, vid=%d, "
32 "vlan_if_name=%s)", if_name, vid, vlan_if_name);
34 if ((os_strlen(if_name) + 1) > IFNAMSIZ) {
35 wpa_printf(MSG_ERROR, "VLAN: Interface name too long: '%s'",
40 if ((os_strlen(vlan_if_name) + 1) > IFNAMSIZ) {
41 wpa_printf(MSG_ERROR, "VLAN: Interface name too long: '%s'",
46 handle = nl_socket_alloc();
48 wpa_printf(MSG_ERROR, "VLAN: failed to open netlink socket");
52 err = nl_connect(handle, NETLINK_ROUTE);
54 wpa_printf(MSG_ERROR, "VLAN: failed to connect to netlink: %s",
59 err = rtnl_link_get_kernel(handle, 0, if_name, &rlink);
61 /* link does not exist */
62 wpa_printf(MSG_ERROR, "VLAN: interface %s does not exist",
66 if_idx = rtnl_link_get_ifindex(rlink);
70 err = rtnl_link_get_kernel(handle, 0, vlan_if_name, &rlink);
75 wpa_printf(MSG_ERROR, "VLAN: interface %s already exists",
81 rlink = rtnl_link_alloc();
83 wpa_printf(MSG_ERROR, "VLAN: failed to allocate new link");
87 err = rtnl_link_set_type(rlink, "vlan");
89 wpa_printf(MSG_ERROR, "VLAN: failed to set link type: %s",
94 rtnl_link_set_link(rlink, if_idx);
95 rtnl_link_set_name(rlink, vlan_if_name);
97 err = rtnl_link_vlan_set_id(rlink, vid);
99 wpa_printf(MSG_ERROR, "VLAN: failed to set link vlan id: %s",
104 err = rtnl_link_add(handle, rlink, NLM_F_CREATE);
106 wpa_printf(MSG_ERROR, "VLAN: failed to create link %s for "
107 "vlan %d on %s (%d): %s",
108 vlan_if_name, vid, if_name, if_idx,
117 rtnl_link_put(rlink);
119 nl_socket_free(handle);
124 int vlan_rem(const char *if_name)
127 struct nl_sock *handle = NULL;
128 struct rtnl_link *rlink = NULL;
130 wpa_printf(MSG_DEBUG, "VLAN: vlan_rem(if_name=%s)", if_name);
132 handle = nl_socket_alloc();
134 wpa_printf(MSG_ERROR, "VLAN: failed to open netlink socket");
138 err = nl_connect(handle, NETLINK_ROUTE);
140 wpa_printf(MSG_ERROR, "VLAN: failed to connect to netlink: %s",
145 err = rtnl_link_get_kernel(handle, 0, if_name, &rlink);
147 /* link does not exist */
148 wpa_printf(MSG_ERROR, "VLAN: interface %s does not exists",
153 err = rtnl_link_delete(handle, rlink);
155 wpa_printf(MSG_ERROR, "VLAN: failed to remove link %s: %s",
156 if_name, nl_geterror(err));
164 rtnl_link_put(rlink);
166 nl_socket_free(handle);
171 int vlan_set_name_type(unsigned int name_type)