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->rsn_ie) {
51 ifmsh->mconf->rsn_ie = 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;
169 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
173 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
174 ifmsh->bss[0]->dot11RSNASAERetransPeriod =
175 wpa_s->conf->dot11RSNASAERetransPeriod;
176 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
178 mconf = mesh_config_create(ssid);
181 ifmsh->mconf = mconf;
183 /* need conf->hw_mode for supported rates. */
184 if (ssid->frequency == 0) {
185 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
188 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
191 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
192 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
197 if (ssid->mesh_basic_rates == NULL) {
199 * XXX: Hack! This is so an MPM which correctly sets the ERP
200 * mandatory rates as BSSBasicRateSet doesn't reject us. We
201 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
202 * this is way easier. This also makes our BSSBasicRateSet
203 * advertised in beacons match the one in peering frames, sigh.
205 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
206 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
207 if (!conf->basic_rates)
209 os_memcpy(conf->basic_rates, basic_rates_erp,
210 sizeof(basic_rates_erp));
215 if (ssid->mesh_basic_rates[rate_len] < 1)
219 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
220 if (conf->basic_rates == NULL)
222 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
223 rate_len * sizeof(int));
224 conf->basic_rates[rate_len] = -1;
227 if (hostapd_setup_interface(ifmsh)) {
228 wpa_printf(MSG_ERROR,
229 "Failed to initialize hostapd interface for mesh");
233 if (wpa_drv_init_mesh(wpa_s)) {
234 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
238 if (mconf->security != MESH_CONF_SEC_NONE) {
239 if (ssid->passphrase == NULL) {
240 wpa_printf(MSG_ERROR,
241 "mesh: Passphrase for SAE not configured");
245 bss->conf->wpa = ssid->proto;
246 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
248 if (wpa_s->conf->sae_groups &&
249 wpa_s->conf->sae_groups[0] > 0) {
250 wpas_mesh_copy_groups(bss, wpa_s);
252 bss->conf->sae_groups =
253 os_malloc(sizeof(default_groups));
254 if (!bss->conf->sae_groups)
256 os_memcpy(bss->conf->sae_groups, default_groups,
257 sizeof(default_groups));
260 len = os_strlen(ssid->passphrase);
261 bss->conf->ssid.wpa_passphrase =
262 dup_binstr(ssid->passphrase, len);
264 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
265 if (!wpa_s->mesh_rsn)
269 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
273 wpa_supplicant_mesh_deinit(wpa_s);
278 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
279 const u8 *ies, size_t ie_len)
281 struct ieee802_11_elems elems;
283 wpa_msg(wpa_s, MSG_INFO,
284 "new peer notification for " MACSTR, MAC2STR(addr));
286 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
287 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
291 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
295 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
296 struct wpabuf **extra_ie)
298 /* EID + 0-length (wildcard) mesh-id */
301 if (wpabuf_resize(extra_ie, ielen) == 0) {
302 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
303 wpabuf_put_u8(*extra_ie, 0);
308 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
309 struct wpa_ssid *ssid)
311 struct wpa_driver_mesh_join_params params;
314 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
319 wpa_supplicant_mesh_deinit(wpa_s);
321 os_memset(¶ms, 0, sizeof(params));
322 params.meshid = ssid->ssid;
323 params.meshid_len = ssid->ssid_len;
324 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms.freq);
325 wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
326 if (ssid->beacon_int > 0)
327 params.beacon_int = ssid->beacon_int;
328 else if (wpa_s->conf->beacon_int > 0)
329 params.beacon_int = wpa_s->conf->beacon_int;
330 params.max_peer_links = wpa_s->conf->max_peer_links;
332 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
333 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
334 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
335 wpa_s->conf->user_mpm = 1;
338 if (wpa_s->conf->user_mpm) {
339 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
340 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
342 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
343 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
345 params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
347 if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
348 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
349 wpa_drv_leave_mesh(wpa_s);
355 params.ies = wpa_s->ifmsh->mconf->rsn_ie;
356 params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len;
357 params.basic_rates = wpa_s->ifmsh->basic_rates;
360 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
361 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
362 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
364 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
366 /* hostapd sets the interface down until we associate */
367 wpa_drv_set_operstate(wpa_s, 1);
374 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
378 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
380 /* Need to send peering close messages first */
381 wpa_supplicant_mesh_deinit(wpa_s);
383 ret = wpa_drv_leave_mesh(wpa_s);
385 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
387 wpa_drv_set_operstate(wpa_s, 1);
393 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
395 struct ieee802_11_elems elems;
396 char *mesh_id, *pos = buf;
397 u8 *bss_basic_rate_set;
398 int bss_basic_rate_set_len, ret, i;
400 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
403 if (elems.mesh_id_len < 1)
406 mesh_id = os_malloc(elems.mesh_id_len + 1);
410 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
411 mesh_id[elems.mesh_id_len] = '\0';
412 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
414 if (os_snprintf_error(end - pos, ret))
418 if (elems.mesh_config_len > 6) {
419 ret = os_snprintf(pos, end - pos,
420 "active_path_selection_protocol_id=0x%02x\n"
421 "active_path_selection_metric_id=0x%02x\n"
422 "congestion_control_mode_id=0x%02x\n"
423 "synchronization_method_id=0x%02x\n"
424 "authentication_protocol_id=0x%02x\n"
425 "mesh_formation_info=0x%02x\n"
426 "mesh_capability=0x%02x\n",
427 elems.mesh_config[0], elems.mesh_config[1],
428 elems.mesh_config[2], elems.mesh_config[3],
429 elems.mesh_config[4], elems.mesh_config[5],
430 elems.mesh_config[6]);
431 if (os_snprintf_error(end - pos, ret))
436 bss_basic_rate_set = os_malloc(elems.supp_rates_len +
437 elems.ext_supp_rates_len);
438 if (bss_basic_rate_set == NULL)
441 bss_basic_rate_set_len = 0;
442 for (i = 0; i < elems.supp_rates_len; i++) {
443 if (elems.supp_rates[i] & 0x80) {
444 bss_basic_rate_set[bss_basic_rate_set_len++] =
445 (elems.supp_rates[i] & 0x7f) * 5;
448 for (i = 0; i < elems.ext_supp_rates_len; i++) {
449 if (elems.ext_supp_rates[i] & 0x80) {
450 bss_basic_rate_set[bss_basic_rate_set_len++] =
451 (elems.ext_supp_rates[i] & 0x7f) * 5;
454 if (bss_basic_rate_set_len > 0) {
455 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
456 bss_basic_rate_set[0]);
457 if (os_snprintf_error(end - pos, ret))
461 for (i = 1; i < bss_basic_rate_set_len; i++) {
462 ret = os_snprintf(pos, end - pos, " %d",
463 bss_basic_rate_set[i]);
464 if (os_snprintf_error(end - pos, ret))
469 ret = os_snprintf(pos, end - pos, "\n");
470 if (os_snprintf_error(end - pos, ret))
475 os_free(bss_basic_rate_set);
481 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
484 return mesh_attr_text(ies, ies_len, buf, end);
488 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
491 char *ifname_ptr = wpa_s->ifname;
494 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
496 if (os_snprintf_error(len, res) ||
497 (os_strlen(ifname) >= IFNAMSIZ &&
498 os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
499 /* Try to avoid going over the IFNAMSIZ length limit */
500 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
501 if (os_snprintf_error(len, res))
504 wpa_s->mesh_if_idx++;
509 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
512 struct wpa_interface iface;
513 struct wpa_supplicant *mesh_wpa_s;
516 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
519 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
521 wpa_printf(MSG_ERROR,
522 "mesh: Failed to create new mesh interface");
525 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
526 MACSTR, ifname, MAC2STR(addr));
528 os_memset(&iface, 0, sizeof(iface));
529 iface.ifname = ifname;
530 iface.driver = wpa_s->driver->name;
531 iface.driver_param = wpa_s->conf->driver_param;
532 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
534 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
536 wpa_printf(MSG_ERROR,
537 "mesh: Failed to create new wpa_supplicant interface");
538 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
541 mesh_wpa_s->mesh_if_created = 1;