2 * WPA Supplicant - Basic mesh mode routines
3 * Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "utils/eloop.h"
13 #include "utils/uuid.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/wpa_ctrl.h"
16 #include "ap/sta_info.h"
17 #include "ap/hostapd.h"
18 #include "ap/ieee802_11.h"
19 #include "config_ssid.h"
21 #include "wpa_supplicant_i.h"
29 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
31 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
33 wpa_s->current_ssid = NULL;
34 os_free(wpa_s->mesh_rsn);
35 wpa_s->mesh_rsn = NULL;
36 /* TODO: leave mesh (stop beacon). This will happen on link down
37 * anyway, so it's not urgent */
41 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
42 struct hostapd_iface *ifmsh)
48 mesh_mpm_deinit(wpa_s, ifmsh);
49 if (ifmsh->mconf->ies) {
50 ifmsh->mconf->ies = NULL;
51 /* We cannot free this struct
52 * because wpa_authenticator on
53 * hostapd side is also using it
54 * for now just set to NULL and
55 * let hostapd code free it.
58 os_free(ifmsh->mconf);
62 /* take care of shared data */
63 hostapd_interface_deinit(ifmsh);
64 hostapd_interface_free(ifmsh);
68 static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
70 struct mesh_conf *conf;
72 conf = os_zalloc(sizeof(struct mesh_conf));
76 os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
77 conf->meshid_len = ssid->ssid_len;
79 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
80 conf->security |= MESH_CONF_SEC_AUTH |
83 conf->security |= MESH_CONF_SEC_NONE;
86 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
87 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
89 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
90 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
96 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
97 struct wpa_supplicant *wpa_s)
102 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
106 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
107 bss->conf->sae_groups = os_malloc(groups_size);
108 if (bss->conf->sae_groups)
109 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
114 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
115 struct wpa_ssid *ssid)
117 struct hostapd_iface *ifmsh;
118 struct hostapd_data *bss;
119 struct hostapd_config *conf;
120 struct mesh_conf *mconf;
121 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
122 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
125 if (!wpa_s->conf->user_mpm) {
126 /* not much for us to do here */
127 wpa_msg(wpa_s, MSG_WARNING,
128 "user_mpm is not enabled in configuration");
132 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
137 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
138 sizeof(struct hostapd_data *));
142 ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
146 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
147 bss->driver = wpa_s->driver;
148 bss->drv_priv = wpa_s->drv_priv;
150 wpa_s->assoc_freq = ssid->frequency;
151 wpa_s->current_ssid = ssid;
153 /* setup an AP config for auth processing */
154 conf = hostapd_config_defaults();
158 bss->conf = *conf->bss;
159 bss->conf->start_disabled = 1;
160 bss->conf->mesh = MESH_ENABLED;
164 ifmsh->bss[0]->max_plinks = 99;
165 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
167 mconf = mesh_config_create(ssid);
170 ifmsh->mconf = mconf;
172 /* need conf->hw_mode for supported rates. */
173 if (ssid->frequency == 0) {
174 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
177 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
180 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
181 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
187 * XXX: Hack! This is so an MPM which correctly sets the ERP mandatory
188 * rates as BSSBasicRateSet doesn't reject us. We could add a new
189 * hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but this is way easier. This
190 * also makes our BSSBasicRateSet advertised in Beacon frames match the
191 * one in peering frames, sigh.
193 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
194 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
195 if (!conf->basic_rates)
197 os_memcpy(conf->basic_rates, basic_rates_erp,
198 sizeof(basic_rates_erp));
201 if (hostapd_setup_interface(ifmsh)) {
202 wpa_printf(MSG_ERROR,
203 "Failed to initialize hostapd interface for mesh");
207 if (wpa_drv_init_mesh(wpa_s)) {
208 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
212 if (mconf->security != MESH_CONF_SEC_NONE) {
213 if (ssid->passphrase == NULL) {
214 wpa_printf(MSG_ERROR,
215 "mesh: Passphrase for SAE not configured");
219 bss->conf->wpa = ssid->proto;
220 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
222 if (wpa_s->conf->sae_groups &&
223 wpa_s->conf->sae_groups[0] > 0) {
224 wpas_mesh_copy_groups(bss, wpa_s);
226 bss->conf->sae_groups =
227 os_malloc(sizeof(default_groups));
228 if (!bss->conf->sae_groups)
230 os_memcpy(bss->conf->sae_groups, default_groups,
231 sizeof(default_groups));
234 len = os_strlen(ssid->passphrase);
235 bss->conf->ssid.wpa_passphrase =
236 dup_binstr(ssid->passphrase, len);
238 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
239 if (!wpa_s->mesh_rsn)
245 wpa_supplicant_mesh_deinit(wpa_s);
250 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
251 const u8 *ies, size_t ie_len)
253 struct ieee802_11_elems elems;
255 wpa_msg(wpa_s, MSG_INFO,
256 "new peer notification for " MACSTR, MAC2STR(addr));
258 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
259 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
263 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
267 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
268 struct wpabuf **extra_ie)
270 /* EID + 0-length (wildcard) mesh-id */
273 if (wpabuf_resize(extra_ie, ielen) == 0) {
274 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
275 wpabuf_put_u8(*extra_ie, 0);
280 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
281 struct wpa_ssid *ssid)
283 struct wpa_driver_mesh_join_params params;
286 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
291 wpa_supplicant_mesh_deinit(wpa_s);
293 os_memset(¶ms, 0, sizeof(params));
294 params.meshid = ssid->ssid;
295 params.meshid_len = ssid->ssid_len;
296 params.freq = ssid->frequency;
298 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
299 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
300 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
301 wpa_s->conf->user_mpm = 1;
304 if (wpa_s->conf->user_mpm) {
305 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
306 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
308 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
309 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
312 if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
313 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
319 params.ies = wpa_s->ifmsh->mconf->ies;
320 params.ie_len = wpa_s->ifmsh->mconf->ie_len;
321 params.basic_rates = wpa_s->ifmsh->basic_rates;
324 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
325 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
326 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
328 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
330 /* hostapd sets the interface down until we associate */
331 wpa_drv_set_operstate(wpa_s, 1);
338 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
342 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
344 ret = wpa_drv_leave_mesh(wpa_s);
346 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
348 wpa_drv_set_operstate(wpa_s, 1);
350 wpa_supplicant_mesh_deinit(wpa_s);