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"
30 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
32 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
34 wpa_s->current_ssid = NULL;
35 os_free(wpa_s->mesh_rsn);
36 wpa_s->mesh_rsn = NULL;
37 /* TODO: leave mesh (stop beacon). This will happen on link down
38 * anyway, so it's not urgent */
42 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
43 struct hostapd_iface *ifmsh)
49 mesh_mpm_deinit(wpa_s, ifmsh);
50 if (ifmsh->mconf->ies) {
51 ifmsh->mconf->ies = NULL;
52 /* We cannot free this struct
53 * because wpa_authenticator on
54 * hostapd side is also using it
55 * for now just set to NULL and
56 * let hostapd code free it.
59 os_free(ifmsh->mconf);
63 /* take care of shared data */
64 hostapd_interface_deinit(ifmsh);
65 hostapd_interface_free(ifmsh);
69 static struct mesh_conf * mesh_config_create(struct wpa_ssid *ssid)
71 struct mesh_conf *conf;
73 conf = os_zalloc(sizeof(struct mesh_conf));
77 os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
78 conf->meshid_len = ssid->ssid_len;
80 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
81 conf->security |= MESH_CONF_SEC_AUTH |
84 conf->security |= MESH_CONF_SEC_NONE;
87 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
88 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
90 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
91 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
97 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
98 struct wpa_supplicant *wpa_s)
103 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
107 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
108 bss->conf->sae_groups = os_malloc(groups_size);
109 if (bss->conf->sae_groups)
110 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
115 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
116 struct wpa_ssid *ssid)
118 struct hostapd_iface *ifmsh;
119 struct hostapd_data *bss;
120 struct hostapd_config *conf;
121 struct mesh_conf *mconf;
122 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
123 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
127 if (!wpa_s->conf->user_mpm) {
128 /* not much for us to do here */
129 wpa_msg(wpa_s, MSG_WARNING,
130 "user_mpm is not enabled in configuration");
134 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
138 ifmsh->drv_flags = wpa_s->drv_flags;
140 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
141 sizeof(struct hostapd_data *));
145 ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
149 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
150 bss->driver = wpa_s->driver;
151 bss->drv_priv = wpa_s->drv_priv;
153 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
154 wpa_s->assoc_freq = ssid->frequency;
155 wpa_s->current_ssid = ssid;
157 /* setup an AP config for auth processing */
158 conf = hostapd_config_defaults();
162 bss->conf = *conf->bss;
163 bss->conf->start_disabled = 1;
164 bss->conf->mesh = MESH_ENABLED;
168 ifmsh->bss[0]->max_plinks = 99;
169 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
171 mconf = mesh_config_create(ssid);
174 ifmsh->mconf = mconf;
176 /* need conf->hw_mode for supported rates. */
177 if (ssid->frequency == 0) {
178 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
181 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
184 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
185 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
190 if (ssid->mesh_basic_rates == NULL) {
192 * XXX: Hack! This is so an MPM which correctly sets the ERP
193 * mandatory rates as BSSBasicRateSet doesn't reject us. We
194 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
195 * this is way easier. This also makes our BSSBasicRateSet
196 * advertised in beacons match the one in peering frames, sigh.
198 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
199 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
200 if (!conf->basic_rates)
202 os_memcpy(conf->basic_rates, basic_rates_erp,
203 sizeof(basic_rates_erp));
208 if (ssid->mesh_basic_rates[rate_len] < 1)
212 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
213 if (conf->basic_rates == NULL)
215 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
216 rate_len * sizeof(int));
217 conf->basic_rates[rate_len] = -1;
220 if (hostapd_setup_interface(ifmsh)) {
221 wpa_printf(MSG_ERROR,
222 "Failed to initialize hostapd interface for mesh");
226 if (wpa_drv_init_mesh(wpa_s)) {
227 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
231 if (mconf->security != MESH_CONF_SEC_NONE) {
232 if (ssid->passphrase == NULL) {
233 wpa_printf(MSG_ERROR,
234 "mesh: Passphrase for SAE not configured");
238 bss->conf->wpa = ssid->proto;
239 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
241 if (wpa_s->conf->sae_groups &&
242 wpa_s->conf->sae_groups[0] > 0) {
243 wpas_mesh_copy_groups(bss, wpa_s);
245 bss->conf->sae_groups =
246 os_malloc(sizeof(default_groups));
247 if (!bss->conf->sae_groups)
249 os_memcpy(bss->conf->sae_groups, default_groups,
250 sizeof(default_groups));
253 len = os_strlen(ssid->passphrase);
254 bss->conf->ssid.wpa_passphrase =
255 dup_binstr(ssid->passphrase, len);
257 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
258 if (!wpa_s->mesh_rsn)
262 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
266 wpa_supplicant_mesh_deinit(wpa_s);
271 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
272 const u8 *ies, size_t ie_len)
274 struct ieee802_11_elems elems;
276 wpa_msg(wpa_s, MSG_INFO,
277 "new peer notification for " MACSTR, MAC2STR(addr));
279 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
280 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
284 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
288 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
289 struct wpabuf **extra_ie)
291 /* EID + 0-length (wildcard) mesh-id */
294 if (wpabuf_resize(extra_ie, ielen) == 0) {
295 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
296 wpabuf_put_u8(*extra_ie, 0);
301 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
302 struct wpa_ssid *ssid)
304 struct wpa_driver_mesh_join_params params;
307 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
312 wpa_supplicant_mesh_deinit(wpa_s);
314 os_memset(¶ms, 0, sizeof(params));
315 params.meshid = ssid->ssid;
316 params.meshid_len = ssid->ssid_len;
317 params.freq = ssid->frequency;
318 #ifdef CONFIG_IEEE80211N
319 params.ht_mode = ssid->mesh_ht_mode;
320 #endif /* CONFIG_IEEE80211N */
322 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
323 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
324 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
325 wpa_s->conf->user_mpm = 1;
328 if (wpa_s->conf->user_mpm) {
329 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
330 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
332 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
333 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
336 if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
337 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
343 params.ies = wpa_s->ifmsh->mconf->ies;
344 params.ie_len = wpa_s->ifmsh->mconf->ie_len;
345 params.basic_rates = wpa_s->ifmsh->basic_rates;
348 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
349 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
350 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
352 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
354 /* hostapd sets the interface down until we associate */
355 wpa_drv_set_operstate(wpa_s, 1);
362 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
366 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
368 ret = wpa_drv_leave_mesh(wpa_s);
370 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
372 wpa_drv_set_operstate(wpa_s, 1);
374 wpa_supplicant_mesh_deinit(wpa_s);