1 /*
2 * WPA Supplicant - Basic mesh mode routines
3 * Copyright (c) 2013-2014, cozybit, Inc. All rights reserved.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
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 "common/hw_features_common.h"
17 #include "ap/sta_info.h"
18 #include "ap/hostapd.h"
19 #include "ap/ieee802_11.h"
20 #include "config_ssid.h"
21 #include "config.h"
22 #include "wpa_supplicant_i.h"
23 #include "driver_i.h"
24 #include "notify.h"
25 #include "ap.h"
26 #include "mesh_mpm.h"
27 #include "mesh_rsn.h"
28 #include "mesh.h"
29
30
wpa_supplicant_mesh_deinit(struct wpa_supplicant * wpa_s,bool also_clear_hostapd)31 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s,
32 bool also_clear_hostapd)
33 {
34 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh,
35 also_clear_hostapd);
36
37 if (also_clear_hostapd) {
38 wpa_s->ifmsh = NULL;
39 wpa_s->current_ssid = NULL;
40 os_free(wpa_s->mesh_params);
41 wpa_s->mesh_params = NULL;
42 }
43
44 os_free(wpa_s->mesh_rsn);
45 wpa_s->mesh_rsn = NULL;
46
47 if (!also_clear_hostapd)
48 wpa_supplicant_leave_mesh(wpa_s, false);
49 }
50
51
wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant * wpa_s,struct hostapd_iface * ifmsh,bool also_clear_hostapd)52 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
53 struct hostapd_iface *ifmsh,
54 bool also_clear_hostapd)
55 {
56 if (!ifmsh)
57 return;
58
59 if (ifmsh->mconf) {
60 mesh_mpm_deinit(wpa_s, ifmsh);
61 if (ifmsh->mconf->rsn_ie) {
62 ifmsh->mconf->rsn_ie = NULL;
63 /* We cannot free this struct
64 * because wpa_authenticator on
65 * hostapd side is also using it
66 * for now just set to NULL and
67 * let hostapd code free it.
68 */
69 }
70 os_free(ifmsh->mconf);
71 ifmsh->mconf = NULL;
72 }
73
74 /* take care of shared data */
75 if (also_clear_hostapd) {
76 hostapd_interface_deinit(ifmsh);
77 hostapd_interface_free(ifmsh);
78 }
79 }
80
81
mesh_config_create(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)82 static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
83 struct wpa_ssid *ssid)
84 {
85 struct mesh_conf *conf;
86 int cipher;
87
88 conf = os_zalloc(sizeof(struct mesh_conf));
89 if (!conf)
90 return NULL;
91
92 os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
93 conf->meshid_len = ssid->ssid_len;
94
95 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
96 conf->security |= MESH_CONF_SEC_AUTH |
97 MESH_CONF_SEC_AMPE;
98 else
99 conf->security |= MESH_CONF_SEC_NONE;
100 conf->ieee80211w = ssid->ieee80211w;
101 if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
102 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
103 conf->ieee80211w = wpa_s->conf->pmf;
104 else
105 conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
106 }
107 #ifdef CONFIG_OCV
108 conf->ocv = ssid->ocv;
109 #endif /* CONFIG_OCV */
110
111 cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
112 if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
113 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
114 os_free(conf);
115 return NULL;
116 }
117 conf->pairwise_cipher = cipher;
118
119 cipher = wpa_pick_group_cipher(ssid->group_cipher);
120 if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
121 cipher == WPA_CIPHER_GTK_NOT_USED) {
122 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
123 os_free(conf);
124 return NULL;
125 }
126
127 conf->group_cipher = cipher;
128 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
129 if (ssid->group_mgmt_cipher == WPA_CIPHER_BIP_GMAC_128 ||
130 ssid->group_mgmt_cipher == WPA_CIPHER_BIP_GMAC_256 ||
131 ssid->group_mgmt_cipher == WPA_CIPHER_BIP_CMAC_256)
132 conf->mgmt_group_cipher = ssid->group_mgmt_cipher;
133 else
134 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
135 }
136
137 /* defaults */
138 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
139 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
140 conf->mesh_cc_id = 0;
141 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
142 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
143 conf->mesh_fwding = ssid->mesh_fwding;
144 conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
145 conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
146 conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
147 conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
148
149 return conf;
150 }
151
152
wpas_mesh_copy_groups(struct hostapd_data * bss,struct wpa_supplicant * wpa_s)153 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
154 struct wpa_supplicant *wpa_s)
155 {
156 int num_groups;
157 size_t groups_size;
158
159 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
160 num_groups++)
161 ;
162
163 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
164 bss->conf->sae_groups = os_malloc(groups_size);
165 if (bss->conf->sae_groups)
166 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
167 groups_size);
168 }
169
170
wpas_mesh_init_rsn(struct wpa_supplicant * wpa_s)171 static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
172 {
173 struct hostapd_iface *ifmsh = wpa_s->ifmsh;
174 struct wpa_ssid *ssid = wpa_s->current_ssid;
175 struct hostapd_data *bss = ifmsh->bss[0];
176 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
177 const char *password;
178 size_t len;
179
180 password = ssid->sae_password;
181 if (!password)
182 password = ssid->passphrase;
183 if (!password) {
184 wpa_printf(MSG_ERROR,
185 "mesh: Passphrase for SAE not configured");
186 return -1;
187 }
188
189 bss->conf->wpa = ssid->proto;
190 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
191
192 if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) {
193 wpas_mesh_copy_groups(bss, wpa_s);
194 } else {
195 bss->conf->sae_groups = os_memdup(default_groups,
196 sizeof(default_groups));
197 if (!bss->conf->sae_groups)
198 return -1;
199 }
200
201 len = os_strlen(password);
202 bss->conf->ssid.wpa_passphrase = dup_binstr(password, len);
203
204 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf);
205 return !wpa_s->mesh_rsn ? -1 : 0;
206 }
207
208
wpas_mesh_update_freq_params(struct wpa_supplicant * wpa_s)209 static int wpas_mesh_update_freq_params(struct wpa_supplicant *wpa_s)
210 {
211 struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
212 struct hostapd_iface *ifmsh = wpa_s->ifmsh;
213 struct he_capabilities *he_capab = NULL;
214
215 if (ifmsh->current_mode)
216 he_capab = &ifmsh->current_mode->he_capab[IEEE80211_MODE_MESH];
217
218 if (hostapd_set_freq_params(
219 ¶ms->freq,
220 ifmsh->conf->hw_mode,
221 ifmsh->freq,
222 ifmsh->conf->channel,
223 ifmsh->conf->enable_edmg,
224 ifmsh->conf->edmg_channel,
225 ifmsh->conf->ieee80211n,
226 ifmsh->conf->ieee80211ac,
227 ifmsh->conf->ieee80211ax,
228 ifmsh->conf->ieee80211be,
229 ifmsh->conf->secondary_channel,
230 hostapd_get_oper_chwidth(ifmsh->conf),
231 hostapd_get_oper_centr_freq_seg0_idx(ifmsh->conf),
232 hostapd_get_oper_centr_freq_seg1_idx(ifmsh->conf),
233 ifmsh->conf->vht_capab,
234 he_capab, NULL, 0)) {
235 wpa_printf(MSG_ERROR, "Error updating mesh frequency params");
236 wpa_supplicant_mesh_deinit(wpa_s, true);
237 return -1;
238 }
239
240 return 0;
241 }
242
243
wpas_mesh_complete(struct wpa_supplicant * wpa_s)244 static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
245 {
246 struct hostapd_iface *ifmsh = wpa_s->ifmsh;
247 struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
248 struct wpa_ssid *ssid = wpa_s->current_ssid;
249 int ret;
250
251 if (!params || !ssid || !ifmsh) {
252 wpa_printf(MSG_ERROR, "mesh: %s called without active mesh",
253 __func__);
254 return -1;
255 }
256
257 /*
258 * Update channel configuration if the channel has changed since the
259 * initial setting, i.e., due to DFS radar detection during CAC.
260 */
261 if (ifmsh->freq > 0 && ifmsh->freq != params->freq.freq) {
262 wpa_s->assoc_freq = ifmsh->freq;
263 ssid->frequency = ifmsh->freq;
264 if (wpas_mesh_update_freq_params(wpa_s) < 0)
265 return -1;
266 }
267
268 if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
269 wpas_mesh_init_rsn(wpa_s)) {
270 wpa_printf(MSG_ERROR,
271 "mesh: RSN initialization failed - deinit mesh");
272 wpa_supplicant_mesh_deinit(wpa_s, false);
273 return -1;
274 }
275
276 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
277 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
278 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
279 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
280 }
281
282 params->ies = ifmsh->mconf->rsn_ie;
283 params->ie_len = ifmsh->mconf->rsn_ie_len;
284 params->basic_rates = ifmsh->basic_rates;
285 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
286 params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode;
287
288 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
289 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
290 ret = wpa_drv_join_mesh(wpa_s, params);
291 if (ret)
292 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
293
294 /* hostapd sets the interface down until we associate */
295 wpa_drv_set_operstate(wpa_s, 1);
296
297 if (!ret) {
298 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
299
300 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_STARTED "ssid=\"%s\" id=%d",
301 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
302 ssid->id);
303 wpas_notify_mesh_group_started(wpa_s, ssid);
304 }
305
306 return ret;
307 }
308
309
wpas_mesh_complete_cb(void * arg)310 static void wpas_mesh_complete_cb(void *arg)
311 {
312 struct wpa_supplicant *wpa_s = arg;
313
314 wpas_mesh_complete(wpa_s);
315 }
316
317
wpa_supplicant_mesh_enable_iface_cb(struct hostapd_iface * ifmsh)318 static int wpa_supplicant_mesh_enable_iface_cb(struct hostapd_iface *ifmsh)
319 {
320 struct wpa_supplicant *wpa_s = ifmsh->owner;
321 struct hostapd_data *bss;
322
323 ifmsh->mconf = mesh_config_create(wpa_s, wpa_s->current_ssid);
324
325 bss = ifmsh->bss[0];
326 bss->msg_ctx = wpa_s;
327 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
328 bss->driver = wpa_s->driver;
329 bss->drv_priv = wpa_s->drv_priv;
330 bss->iface = ifmsh;
331 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
332 bss->setup_complete_cb = wpas_mesh_complete_cb;
333 bss->setup_complete_cb_ctx = wpa_s;
334
335 bss->conf->start_disabled = 1;
336 bss->conf->mesh = MESH_ENABLED;
337 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
338
339 if (wpa_drv_init_mesh(wpa_s)) {
340 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
341 return -1;
342 }
343
344 if (hostapd_setup_interface(ifmsh)) {
345 wpa_printf(MSG_ERROR,
346 "Failed to initialize hostapd interface for mesh");
347 return -1;
348 }
349
350 return 0;
351 }
352
353
wpa_supplicant_mesh_disable_iface_cb(struct hostapd_iface * ifmsh)354 static int wpa_supplicant_mesh_disable_iface_cb(struct hostapd_iface *ifmsh)
355 {
356 struct wpa_supplicant *wpa_s = ifmsh->owner;
357 size_t j;
358
359 wpa_supplicant_mesh_deinit(wpa_s, false);
360
361 #ifdef NEED_AP_MLME
362 for (j = 0; j < ifmsh->num_bss; j++)
363 hostapd_cleanup_cs_params(ifmsh->bss[j]);
364 #endif /* NEED_AP_MLME */
365
366 /* Same as hostapd_interface_deinit() without deinitializing control
367 * interface */
368 for (j = 0; j < ifmsh->num_bss; j++) {
369 struct hostapd_data *hapd = ifmsh->bss[j];
370
371 hostapd_bss_deinit_no_free(hapd);
372 hostapd_free_hapd_data(hapd);
373 }
374
375 hostapd_cleanup_iface_partial(ifmsh);
376
377 return 0;
378 }
379
380
wpa_supplicant_mesh_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct hostapd_freq_params * freq)381 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
382 struct wpa_ssid *ssid,
383 struct hostapd_freq_params *freq)
384 {
385 struct hostapd_iface *ifmsh;
386 struct hostapd_data *bss;
387 struct hostapd_config *conf;
388 struct mesh_conf *mconf;
389 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
390 int rate_len;
391 int frequency;
392
393 if (!wpa_s->conf->user_mpm) {
394 /* not much for us to do here */
395 wpa_msg(wpa_s, MSG_WARNING,
396 "user_mpm is not enabled in configuration");
397 return 0;
398 }
399
400 wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
401 if (!ifmsh)
402 return -ENOMEM;
403
404 ifmsh->owner = wpa_s;
405 ifmsh->drv_flags = wpa_s->drv_flags;
406 ifmsh->drv_flags2 = wpa_s->drv_flags2;
407 ifmsh->num_bss = 1;
408 ifmsh->enable_iface_cb = wpa_supplicant_mesh_enable_iface_cb;
409 ifmsh->disable_iface_cb = wpa_supplicant_mesh_disable_iface_cb;
410 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
411 sizeof(struct hostapd_data *));
412 if (!ifmsh->bss)
413 goto out_free;
414
415 ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
416 if (!bss)
417 goto out_free;
418
419 ifmsh->bss[0]->msg_ctx = wpa_s;
420 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
421 bss->driver = wpa_s->driver;
422 bss->drv_priv = wpa_s->drv_priv;
423 bss->iface = ifmsh;
424 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
425 bss->setup_complete_cb = wpas_mesh_complete_cb;
426 bss->setup_complete_cb_ctx = wpa_s;
427 frequency = ssid->frequency;
428 if (frequency != freq->freq &&
429 frequency == freq->freq + freq->sec_channel_offset * 20) {
430 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
431 frequency = freq->freq;
432 ssid->frequency = frequency;
433 }
434 wpa_s->assoc_freq = frequency;
435 wpa_s->current_ssid = ssid;
436
437 /* setup an AP config for auth processing */
438 conf = hostapd_config_defaults();
439 if (!conf)
440 goto out_free;
441
442 if (is_6ghz_freq(freq->freq)) {
443 /*
444 * IEEE Std 802.11ax-2021, 12.12.2:
445 * The STA shall use management frame protection (MFPR=1) when
446 * using RSN.
447 */
448 ssid->ieee80211w = MGMT_FRAME_PROTECTION_REQUIRED;
449
450 /* Set mandatory op_class parameter for setting up BSS */
451 switch (freq->bandwidth) {
452 case 20:
453 if (freq->freq == 5935)
454 conf->op_class = 136;
455 else
456 conf->op_class = 131;
457 break;
458 case 40:
459 conf->op_class = 132;
460 break;
461 case 80:
462 conf->op_class = 133;
463 break;
464 case 160:
465 conf->op_class = 134;
466 break;
467 default:
468 conf->op_class = 131;
469 break;
470 }
471 }
472
473 bss->conf = *conf->bss;
474 bss->conf->start_disabled = 1;
475 bss->conf->mesh = MESH_ENABLED;
476 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
477 bss->conf->mesh_fwding = wpa_s->conf->mesh_fwding;
478
479 if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
480 wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
481 conf->ieee80211h = 1;
482 conf->ieee80211d = 1;
483 conf->country[0] = wpa_s->conf->country[0];
484 conf->country[1] = wpa_s->conf->country[1];
485 conf->country[2] = ' ';
486 wpa_s->mesh_params->handle_dfs = true;
487 }
488
489 bss->iconf = conf;
490 ifmsh->conf = conf;
491
492 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
493 ifmsh->bss[0]->dot11RSNASAERetransPeriod =
494 wpa_s->conf->dot11RSNASAERetransPeriod;
495 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
496
497 mconf = mesh_config_create(wpa_s, ssid);
498 if (!mconf)
499 goto out_free;
500 ifmsh->mconf = mconf;
501
502 /* need conf->hw_mode for supported rates. */
503 conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
504 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
505 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
506 frequency);
507 goto out_free;
508 }
509
510 if (ssid->mesh_basic_rates == NULL) {
511 /*
512 * XXX: Hack! This is so an MPM which correctly sets the ERP
513 * mandatory rates as BSSBasicRateSet doesn't reject us. We
514 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
515 * this is way easier. This also makes our BSSBasicRateSet
516 * advertised in beacons match the one in peering frames, sigh.
517 */
518 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
519 conf->basic_rates = os_memdup(basic_rates_erp,
520 sizeof(basic_rates_erp));
521 if (!conf->basic_rates)
522 goto out_free;
523 }
524 } else {
525 rate_len = 0;
526 while (1) {
527 if (ssid->mesh_basic_rates[rate_len] < 1)
528 break;
529 rate_len++;
530 }
531 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
532 if (conf->basic_rates == NULL)
533 goto out_free;
534 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
535 rate_len * sizeof(int));
536 conf->basic_rates[rate_len] = -1;
537 }
538
539 /* While it can enhance performance to switch the primary channel, which
540 * is also the secondary channel of another network at the same time),
541 * to the other primary channel, problems exist with this in mesh
542 * networks.
543 *
544 * Example with problems:
545 * - 3 mesh nodes M1-M3, freq (5200, 5180)
546 * - other node O1, e.g. AP mode, freq (5180, 5200),
547 * Locations: O1 M1 M2 M3
548 *
549 * M3 can only send frames to M1 over M2, no direct connection is
550 * possible
551 * Start O1, M1 and M3 first, M1 or O1 will switch channels to align
552 * with* each other. M3 does not swap, because M1 or O1 cannot be
553 * reached. M2 is started afterwards and can either connect to M3 or M1
554 * because of this primary secondary channel switch.
555 *
556 * Solutions: (1) central coordination -> not always possible
557 * (2) disable pri/sec channel switch in mesh networks
558 *
559 * In AP mode, when all nodes can work independently, this poses of
560 * course no problem, therefore disable it only in mesh mode. */
561 conf->no_pri_sec_switch = 1;
562 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
563
564 if (wpa_drv_init_mesh(wpa_s)) {
565 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
566 return -1;
567 }
568
569 if (hostapd_setup_interface(ifmsh)) {
570 wpa_printf(MSG_ERROR,
571 "Failed to initialize hostapd interface for mesh");
572 return -1;
573 }
574
575 return 0;
576 out_free:
577 wpa_supplicant_mesh_deinit(wpa_s, true);
578 return -ENOMEM;
579 }
580
581
wpa_mesh_notify_peer(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * ies,size_t ie_len)582 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
583 const u8 *ies, size_t ie_len)
584 {
585 struct ieee802_11_elems elems;
586
587 wpa_msg(wpa_s, MSG_INFO,
588 "new peer notification for " MACSTR, MAC2STR(addr));
589
590 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
591 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
592 MAC2STR(addr));
593 return;
594 }
595 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
596 }
597
598
wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant * wpa_s,struct wpabuf ** extra_ie)599 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
600 struct wpabuf **extra_ie)
601 {
602 /* EID + 0-length (wildcard) mesh-id */
603 size_t ielen = 2;
604
605 if (wpabuf_resize(extra_ie, ielen) == 0) {
606 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
607 wpabuf_put_u8(*extra_ie, 0);
608 }
609 }
610
611
wpa_supplicant_join_mesh(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)612 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
613 struct wpa_ssid *ssid)
614 {
615 struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
616 int ret = 0;
617
618 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
619 !params) {
620 ret = -ENOENT;
621 os_free(params);
622 goto out;
623 }
624
625 wpa_supplicant_mesh_deinit(wpa_s, true);
626
627 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
628 wpa_s->group_cipher = WPA_CIPHER_NONE;
629 wpa_s->mgmt_group_cipher = 0;
630
631 params->meshid = ssid->ssid;
632 params->meshid_len = ssid->ssid_len;
633 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms->freq);
634 wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
635 wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
636 wpa_s->mesh_he_enabled = !!params->freq.he_enabled;
637 wpa_s->mesh_eht_enabled = !!params->freq.eht_enabled;
638 if (params->freq.ht_enabled && params->freq.sec_channel_offset)
639 ssid->ht40 = params->freq.sec_channel_offset;
640
641 if (wpa_s->mesh_vht_enabled) {
642 ssid->vht = 1;
643 ssid->vht_center_freq1 = params->freq.center_freq1;
644 switch (params->freq.bandwidth) {
645 case 80:
646 if (params->freq.center_freq2) {
647 ssid->max_oper_chwidth =
648 CONF_OPER_CHWIDTH_80P80MHZ;
649 ssid->vht_center_freq2 =
650 params->freq.center_freq2;
651 } else {
652 ssid->max_oper_chwidth =
653 CONF_OPER_CHWIDTH_80MHZ;
654 }
655 break;
656 case 160:
657 ssid->max_oper_chwidth = CONF_OPER_CHWIDTH_160MHZ;
658 break;
659 default:
660 ssid->max_oper_chwidth = CONF_OPER_CHWIDTH_USE_HT;
661 break;
662 }
663 }
664 if (wpa_s->mesh_he_enabled)
665 ssid->he = 1;
666 if (wpa_s->mesh_eht_enabled)
667 ssid->eht = 1;
668 if (ssid->beacon_int > 0)
669 params->beacon_int = ssid->beacon_int;
670 else if (wpa_s->conf->beacon_int > 0)
671 params->beacon_int = wpa_s->conf->beacon_int;
672 if (ssid->dtim_period > 0)
673 params->dtim_period = ssid->dtim_period;
674 else if (wpa_s->conf->dtim_period > 0)
675 params->dtim_period = wpa_s->conf->dtim_period;
676 params->conf.max_peer_links = wpa_s->conf->max_peer_links;
677 if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
678 params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
679 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
680 }
681
682 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
683 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
684 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
685 wpa_s->conf->user_mpm = 1;
686 }
687
688 if (wpa_s->conf->user_mpm) {
689 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
690 params->conf.auto_plinks = 0;
691 } else {
692 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
693 params->conf.auto_plinks = 1;
694 }
695 params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
696
697 /* Always explicitely set forwarding to on or off for now */
698 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_FORWARDING;
699 params->conf.forwarding = ssid->mesh_fwding;
700
701 os_free(wpa_s->mesh_params);
702 wpa_s->mesh_params = params;
703 if (wpa_supplicant_mesh_init(wpa_s, ssid, ¶ms->freq)) {
704 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
705 wpa_supplicant_leave_mesh(wpa_s, true);
706 ret = -1;
707 goto out;
708 }
709
710 out:
711 return ret;
712 }
713
714
wpa_supplicant_leave_mesh(struct wpa_supplicant * wpa_s,bool need_deinit)715 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s, bool need_deinit)
716 {
717 int ret = 0;
718
719 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
720
721 /* Need to send peering close messages first */
722 if (need_deinit)
723 wpa_supplicant_mesh_deinit(wpa_s, true);
724
725 ret = wpa_drv_leave_mesh(wpa_s);
726 if (ret)
727 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
728
729 wpa_drv_set_operstate(wpa_s, 1);
730
731 return ret;
732 }
733
734
mesh_attr_text(const u8 * ies,size_t ies_len,char * buf,char * end)735 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
736 {
737 struct ieee802_11_elems elems;
738 char *mesh_id, *pos = buf;
739 u8 *bss_basic_rate_set;
740 int bss_basic_rate_set_len, ret, i;
741
742 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
743 return -1;
744
745 if (elems.mesh_id_len < 1)
746 return 0;
747
748 mesh_id = os_malloc(elems.mesh_id_len + 1);
749 if (mesh_id == NULL)
750 return -1;
751
752 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
753 mesh_id[elems.mesh_id_len] = '\0';
754 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
755 os_free(mesh_id);
756 if (os_snprintf_error(end - pos, ret))
757 return pos - buf;
758 pos += ret;
759
760 if (elems.mesh_config_len > 6) {
761 ret = os_snprintf(pos, end - pos,
762 "active_path_selection_protocol_id=0x%02x\n"
763 "active_path_selection_metric_id=0x%02x\n"
764 "congestion_control_mode_id=0x%02x\n"
765 "synchronization_method_id=0x%02x\n"
766 "authentication_protocol_id=0x%02x\n"
767 "mesh_formation_info=0x%02x\n"
768 "mesh_capability=0x%02x\n",
769 elems.mesh_config[0], elems.mesh_config[1],
770 elems.mesh_config[2], elems.mesh_config[3],
771 elems.mesh_config[4], elems.mesh_config[5],
772 elems.mesh_config[6]);
773 if (os_snprintf_error(end - pos, ret))
774 return pos - buf;
775 pos += ret;
776 }
777
778 bss_basic_rate_set = os_malloc(elems.supp_rates_len +
779 elems.ext_supp_rates_len);
780 if (bss_basic_rate_set == NULL)
781 return -1;
782
783 bss_basic_rate_set_len = 0;
784 for (i = 0; i < elems.supp_rates_len; i++) {
785 if (elems.supp_rates[i] & 0x80) {
786 bss_basic_rate_set[bss_basic_rate_set_len++] =
787 (elems.supp_rates[i] & 0x7f) * 5;
788 }
789 }
790 for (i = 0; i < elems.ext_supp_rates_len; i++) {
791 if (elems.ext_supp_rates[i] & 0x80) {
792 bss_basic_rate_set[bss_basic_rate_set_len++] =
793 (elems.ext_supp_rates[i] & 0x7f) * 5;
794 }
795 }
796 if (bss_basic_rate_set_len > 0) {
797 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
798 bss_basic_rate_set[0]);
799 if (os_snprintf_error(end - pos, ret))
800 goto fail;
801 pos += ret;
802
803 for (i = 1; i < bss_basic_rate_set_len; i++) {
804 ret = os_snprintf(pos, end - pos, " %d",
805 bss_basic_rate_set[i]);
806 if (os_snprintf_error(end - pos, ret))
807 goto fail;
808 pos += ret;
809 }
810
811 ret = os_snprintf(pos, end - pos, "\n");
812 if (os_snprintf_error(end - pos, ret))
813 goto fail;
814 pos += ret;
815 }
816 fail:
817 os_free(bss_basic_rate_set);
818
819 return pos - buf;
820 }
821
822
wpas_mesh_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)823 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
824 char *end)
825 {
826 return mesh_attr_text(ies, ies_len, buf, end);
827 }
828
829
wpas_mesh_get_ifname(struct wpa_supplicant * wpa_s,char * ifname,size_t len)830 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
831 size_t len)
832 {
833 char *ifname_ptr = wpa_s->ifname;
834 int res;
835
836 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
837 wpa_s->mesh_if_idx);
838 if (os_snprintf_error(len, res) ||
839 (os_strlen(ifname) >= IFNAMSIZ &&
840 os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
841 /* Try to avoid going over the IFNAMSIZ length limit */
842 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
843 if (os_snprintf_error(len, res))
844 return -1;
845 }
846 wpa_s->mesh_if_idx++;
847 return 0;
848 }
849
850
wpas_mesh_add_interface(struct wpa_supplicant * wpa_s,char * ifname,size_t len)851 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
852 size_t len)
853 {
854 struct wpa_interface iface;
855 struct wpa_supplicant *mesh_wpa_s;
856 u8 addr[ETH_ALEN];
857
858 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
859 return -1;
860
861 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
862 NULL) < 0) {
863 wpa_printf(MSG_ERROR,
864 "mesh: Failed to create new mesh interface");
865 return -1;
866 }
867 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
868 MACSTR, ifname, MAC2STR(addr));
869
870 os_memset(&iface, 0, sizeof(iface));
871 iface.ifname = ifname;
872 iface.driver = wpa_s->driver->name;
873 iface.driver_param = wpa_s->conf->driver_param;
874 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
875
876 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
877 if (!mesh_wpa_s) {
878 wpa_printf(MSG_ERROR,
879 "mesh: Failed to create new wpa_supplicant interface");
880 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
881 return -1;
882 }
883 mesh_wpa_s->mesh_if_created = 1;
884 return 0;
885 }
886
887
wpas_mesh_peer_remove(struct wpa_supplicant * wpa_s,const u8 * addr)888 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
889 {
890 return mesh_mpm_close_peer(wpa_s, addr);
891 }
892
893
wpas_mesh_peer_add(struct wpa_supplicant * wpa_s,const u8 * addr,int duration)894 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
895 int duration)
896 {
897 return mesh_mpm_connect_peer(wpa_s, addr, duration);
898 }
899