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;
92 conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
93 conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
94 conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
95 conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
101 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
102 struct wpa_supplicant *wpa_s)
107 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
111 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
112 bss->conf->sae_groups = os_malloc(groups_size);
113 if (bss->conf->sae_groups)
114 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
119 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
120 struct wpa_ssid *ssid)
122 struct hostapd_iface *ifmsh;
123 struct hostapd_data *bss;
124 struct hostapd_config *conf;
125 struct mesh_conf *mconf;
126 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
127 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
131 if (!wpa_s->conf->user_mpm) {
132 /* not much for us to do here */
133 wpa_msg(wpa_s, MSG_WARNING,
134 "user_mpm is not enabled in configuration");
138 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
142 ifmsh->drv_flags = wpa_s->drv_flags;
144 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
145 sizeof(struct hostapd_data *));
149 ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
153 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
154 bss->driver = wpa_s->driver;
155 bss->drv_priv = wpa_s->drv_priv;
157 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
158 wpa_s->assoc_freq = ssid->frequency;
159 wpa_s->current_ssid = ssid;
161 /* setup an AP config for auth processing */
162 conf = hostapd_config_defaults();
166 bss->conf = *conf->bss;
167 bss->conf->start_disabled = 1;
168 bss->conf->mesh = MESH_ENABLED;
172 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
173 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
175 mconf = mesh_config_create(ssid);
178 ifmsh->mconf = mconf;
180 /* need conf->hw_mode for supported rates. */
181 if (ssid->frequency == 0) {
182 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
185 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
188 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
189 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
194 if (ssid->mesh_basic_rates == NULL) {
196 * XXX: Hack! This is so an MPM which correctly sets the ERP
197 * mandatory rates as BSSBasicRateSet doesn't reject us. We
198 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
199 * this is way easier. This also makes our BSSBasicRateSet
200 * advertised in beacons match the one in peering frames, sigh.
202 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
203 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
204 if (!conf->basic_rates)
206 os_memcpy(conf->basic_rates, basic_rates_erp,
207 sizeof(basic_rates_erp));
212 if (ssid->mesh_basic_rates[rate_len] < 1)
216 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
217 if (conf->basic_rates == NULL)
219 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
220 rate_len * sizeof(int));
221 conf->basic_rates[rate_len] = -1;
224 if (hostapd_setup_interface(ifmsh)) {
225 wpa_printf(MSG_ERROR,
226 "Failed to initialize hostapd interface for mesh");
230 if (wpa_drv_init_mesh(wpa_s)) {
231 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
235 if (mconf->security != MESH_CONF_SEC_NONE) {
236 if (ssid->passphrase == NULL) {
237 wpa_printf(MSG_ERROR,
238 "mesh: Passphrase for SAE not configured");
242 bss->conf->wpa = ssid->proto;
243 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
245 if (wpa_s->conf->sae_groups &&
246 wpa_s->conf->sae_groups[0] > 0) {
247 wpas_mesh_copy_groups(bss, wpa_s);
249 bss->conf->sae_groups =
250 os_malloc(sizeof(default_groups));
251 if (!bss->conf->sae_groups)
253 os_memcpy(bss->conf->sae_groups, default_groups,
254 sizeof(default_groups));
257 len = os_strlen(ssid->passphrase);
258 bss->conf->ssid.wpa_passphrase =
259 dup_binstr(ssid->passphrase, len);
261 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
262 if (!wpa_s->mesh_rsn)
266 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
270 wpa_supplicant_mesh_deinit(wpa_s);
275 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
276 const u8 *ies, size_t ie_len)
278 struct ieee802_11_elems elems;
280 wpa_msg(wpa_s, MSG_INFO,
281 "new peer notification for " MACSTR, MAC2STR(addr));
283 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
284 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
288 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
292 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
293 struct wpabuf **extra_ie)
295 /* EID + 0-length (wildcard) mesh-id */
298 if (wpabuf_resize(extra_ie, ielen) == 0) {
299 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
300 wpabuf_put_u8(*extra_ie, 0);
305 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
306 struct wpa_ssid *ssid)
308 struct wpa_driver_mesh_join_params params;
311 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
316 wpa_supplicant_mesh_deinit(wpa_s);
318 os_memset(¶ms, 0, sizeof(params));
319 params.meshid = ssid->ssid;
320 params.meshid_len = ssid->ssid_len;
321 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms.freq);
322 wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
323 if (ssid->beacon_int > 0)
324 params.beacon_int = ssid->beacon_int;
325 else if (wpa_s->conf->beacon_int > 0)
326 params.beacon_int = wpa_s->conf->beacon_int;
327 params.max_peer_links = wpa_s->conf->max_peer_links;
329 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
330 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
331 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
332 wpa_s->conf->user_mpm = 1;
335 if (wpa_s->conf->user_mpm) {
336 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
337 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
339 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
340 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
343 if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
344 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
350 params.ies = wpa_s->ifmsh->mconf->ies;
351 params.ie_len = wpa_s->ifmsh->mconf->ie_len;
352 params.basic_rates = wpa_s->ifmsh->basic_rates;
355 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
356 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
357 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
359 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
361 /* hostapd sets the interface down until we associate */
362 wpa_drv_set_operstate(wpa_s, 1);
369 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
373 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
375 /* Need to send peering close messages first */
376 wpa_supplicant_mesh_deinit(wpa_s);
378 ret = wpa_drv_leave_mesh(wpa_s);
380 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
382 wpa_drv_set_operstate(wpa_s, 1);
388 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
390 struct ieee802_11_elems elems;
391 char *mesh_id, *pos = buf;
392 u8 *bss_basic_rate_set;
393 int bss_basic_rate_set_len, ret, i;
395 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
398 if (elems.mesh_id_len < 1)
401 mesh_id = os_malloc(elems.mesh_id_len + 1);
405 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
406 mesh_id[elems.mesh_id_len] = '\0';
407 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
409 if (os_snprintf_error(end - pos, ret))
413 if (elems.mesh_config_len > 6) {
414 ret = os_snprintf(pos, end - pos,
415 "active_path_selection_protocol_id=0x%02x\n"
416 "active_path_selection_metric_id=0x%02x\n"
417 "congestion_control_mode_id=0x%02x\n"
418 "synchronization_method_id=0x%02x\n"
419 "authentication_protocol_id=0x%02x\n"
420 "mesh_formation_info=0x%02x\n"
421 "mesh_capability=0x%02x\n",
422 elems.mesh_config[0], elems.mesh_config[1],
423 elems.mesh_config[2], elems.mesh_config[3],
424 elems.mesh_config[4], elems.mesh_config[5],
425 elems.mesh_config[6]);
426 if (os_snprintf_error(end - pos, ret))
431 bss_basic_rate_set = os_malloc(elems.supp_rates_len +
432 elems.ext_supp_rates_len);
433 if (bss_basic_rate_set == NULL)
436 bss_basic_rate_set_len = 0;
437 for (i = 0; i < elems.supp_rates_len; i++) {
438 if (elems.supp_rates[i] & 0x80) {
439 bss_basic_rate_set[bss_basic_rate_set_len++] =
440 (elems.supp_rates[i] & 0x7f) * 5;
443 for (i = 0; i < elems.ext_supp_rates_len; i++) {
444 if (elems.ext_supp_rates[i] & 0x80) {
445 bss_basic_rate_set[bss_basic_rate_set_len++] =
446 (elems.ext_supp_rates[i] & 0x7f) * 5;
449 if (bss_basic_rate_set_len > 0) {
450 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
451 bss_basic_rate_set[0]);
452 if (os_snprintf_error(end - pos, ret))
456 for (i = 1; i < bss_basic_rate_set_len; i++) {
457 ret = os_snprintf(pos, end - pos, " %d",
458 bss_basic_rate_set[i]);
459 if (os_snprintf_error(end - pos, ret))
464 ret = os_snprintf(pos, end - pos, "\n");
465 if (os_snprintf_error(end - pos, ret))
469 os_free(bss_basic_rate_set);
475 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
478 return mesh_attr_text(ies, ies_len, buf, end);
482 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
485 char *ifname_ptr = wpa_s->ifname;
488 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
490 if (os_snprintf_error(len, res) ||
491 (os_strlen(ifname) >= IFNAMSIZ &&
492 os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
493 /* Try to avoid going over the IFNAMSIZ length limit */
494 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
495 if (os_snprintf_error(len, res))
498 wpa_s->mesh_if_idx++;
503 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
506 struct wpa_interface iface;
507 struct wpa_supplicant *mesh_wpa_s;
510 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
513 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
515 wpa_printf(MSG_ERROR,
516 "mesh: Failed to create new mesh interface");
519 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
520 MACSTR, ifname, MAC2STR(addr));
522 os_memset(&iface, 0, sizeof(iface));
523 iface.ifname = ifname;
524 iface.driver = wpa_s->driver->name;
525 iface.driver_param = wpa_s->conf->driver_param;
526 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
528 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
530 wpa_printf(MSG_ERROR,
531 "mesh: Failed to create new wpa_supplicant interface");
532 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
535 mesh_wpa_s->mesh_if_created = 1;
536 mesh_wpa_s->parent = wpa_s;