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 "ap/sta_info.h"
17 #include "ap/hostapd.h"
18 #include "ap/ieee802_11.h"
19 #include "config_ssid.h"
20 #include "config.h"
21 #include "wpa_supplicant_i.h"
22 #include "driver_i.h"
23 #include "notify.h"
24 #include "ap.h"
25 #include "mesh_mpm.h"
26 #include "mesh_rsn.h"
27 #include "mesh.h"
28
29
wpa_supplicant_mesh_deinit(struct wpa_supplicant * wpa_s)30 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
31 {
32 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
33 wpa_s->ifmsh = NULL;
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 */
39 }
40
41
wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant * wpa_s,struct hostapd_iface * ifmsh)42 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
43 struct hostapd_iface *ifmsh)
44 {
45 if (!ifmsh)
46 return;
47
48 if (ifmsh->mconf) {
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.
57 */
58 }
59 os_free(ifmsh->mconf);
60 ifmsh->mconf = NULL;
61 }
62
63 /* take care of shared data */
64 hostapd_interface_deinit(ifmsh);
65 hostapd_interface_free(ifmsh);
66 }
67
68
mesh_config_create(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)69 static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
70 struct wpa_ssid *ssid)
71 {
72 struct mesh_conf *conf;
73 int cipher;
74
75 conf = os_zalloc(sizeof(struct mesh_conf));
76 if (!conf)
77 return NULL;
78
79 os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
80 conf->meshid_len = ssid->ssid_len;
81
82 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
83 conf->security |= MESH_CONF_SEC_AUTH |
84 MESH_CONF_SEC_AMPE;
85 else
86 conf->security |= MESH_CONF_SEC_NONE;
87 conf->ieee80211w = ssid->ieee80211w;
88 if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
89 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
90 conf->ieee80211w = wpa_s->conf->pmf;
91 else
92 conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
93 }
94
95 cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
96 if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
97 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
98 os_free(conf);
99 return NULL;
100 }
101 conf->pairwise_cipher = cipher;
102
103 cipher = wpa_pick_group_cipher(ssid->group_cipher);
104 if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
105 cipher == WPA_CIPHER_GTK_NOT_USED) {
106 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
107 os_free(conf);
108 return NULL;
109 }
110
111 conf->group_cipher = cipher;
112 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION)
113 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
114
115 /* defaults */
116 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
117 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
118 conf->mesh_cc_id = 0;
119 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
120 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
121 conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
122 conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
123 conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
124 conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
125
126 return conf;
127 }
128
129
wpas_mesh_copy_groups(struct hostapd_data * bss,struct wpa_supplicant * wpa_s)130 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
131 struct wpa_supplicant *wpa_s)
132 {
133 int num_groups;
134 size_t groups_size;
135
136 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
137 num_groups++)
138 ;
139
140 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
141 bss->conf->sae_groups = os_malloc(groups_size);
142 if (bss->conf->sae_groups)
143 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
144 groups_size);
145 }
146
147
wpa_supplicant_mesh_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct hostapd_freq_params * freq)148 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
149 struct wpa_ssid *ssid,
150 struct hostapd_freq_params *freq)
151 {
152 struct hostapd_iface *ifmsh;
153 struct hostapd_data *bss;
154 struct hostapd_config *conf;
155 struct mesh_conf *mconf;
156 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
157 static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
158 size_t len;
159 int rate_len;
160 int frequency;
161
162 if (!wpa_s->conf->user_mpm) {
163 /* not much for us to do here */
164 wpa_msg(wpa_s, MSG_WARNING,
165 "user_mpm is not enabled in configuration");
166 return 0;
167 }
168
169 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
170 if (!ifmsh)
171 return -ENOMEM;
172
173 ifmsh->drv_flags = wpa_s->drv_flags;
174 ifmsh->num_bss = 1;
175 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
176 sizeof(struct hostapd_data *));
177 if (!ifmsh->bss)
178 goto out_free;
179
180 ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
181 if (!bss)
182 goto out_free;
183
184 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
185 bss->driver = wpa_s->driver;
186 bss->drv_priv = wpa_s->drv_priv;
187 bss->iface = ifmsh;
188 bss->mesh_sta_free_cb = mesh_mpm_free_sta;
189 frequency = ssid->frequency;
190 if (frequency != freq->freq &&
191 frequency == freq->freq + freq->sec_channel_offset * 20) {
192 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
193 frequency = freq->freq;
194 }
195 wpa_s->assoc_freq = frequency;
196 wpa_s->current_ssid = ssid;
197
198 /* setup an AP config for auth processing */
199 conf = hostapd_config_defaults();
200 if (!conf)
201 goto out_free;
202
203 bss->conf = *conf->bss;
204 bss->conf->start_disabled = 1;
205 bss->conf->mesh = MESH_ENABLED;
206 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
207 bss->iconf = conf;
208 ifmsh->conf = conf;
209
210 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
211 ifmsh->bss[0]->dot11RSNASAERetransPeriod =
212 wpa_s->conf->dot11RSNASAERetransPeriod;
213 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
214
215 mconf = mesh_config_create(wpa_s, ssid);
216 if (!mconf)
217 goto out_free;
218 ifmsh->mconf = mconf;
219
220 /* need conf->hw_mode for supported rates. */
221 conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
222 if (conf->hw_mode == NUM_HOSTAPD_MODES) {
223 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
224 frequency);
225 goto out_free;
226 }
227 if (ssid->ht40)
228 conf->secondary_channel = ssid->ht40;
229 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
230 conf->vht_oper_chwidth = ssid->max_oper_chwidth;
231 switch (conf->vht_oper_chwidth) {
232 case VHT_CHANWIDTH_80MHZ:
233 case VHT_CHANWIDTH_80P80MHZ:
234 ieee80211_freq_to_chan(
235 frequency,
236 &conf->vht_oper_centr_freq_seg0_idx);
237 conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
238 break;
239 case VHT_CHANWIDTH_160MHZ:
240 ieee80211_freq_to_chan(
241 frequency,
242 &conf->vht_oper_centr_freq_seg0_idx);
243 conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
244 conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
245 break;
246 }
247 ieee80211_freq_to_chan(ssid->vht_center_freq2,
248 &conf->vht_oper_centr_freq_seg1_idx);
249 }
250
251 if (ssid->mesh_basic_rates == NULL) {
252 /*
253 * XXX: Hack! This is so an MPM which correctly sets the ERP
254 * mandatory rates as BSSBasicRateSet doesn't reject us. We
255 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
256 * this is way easier. This also makes our BSSBasicRateSet
257 * advertised in beacons match the one in peering frames, sigh.
258 */
259 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
260 conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
261 if (!conf->basic_rates)
262 goto out_free;
263 os_memcpy(conf->basic_rates, basic_rates_erp,
264 sizeof(basic_rates_erp));
265 }
266 } else {
267 rate_len = 0;
268 while (1) {
269 if (ssid->mesh_basic_rates[rate_len] < 1)
270 break;
271 rate_len++;
272 }
273 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
274 if (conf->basic_rates == NULL)
275 goto out_free;
276 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
277 rate_len * sizeof(int));
278 conf->basic_rates[rate_len] = -1;
279 }
280
281 if (hostapd_setup_interface(ifmsh)) {
282 wpa_printf(MSG_ERROR,
283 "Failed to initialize hostapd interface for mesh");
284 return -1;
285 }
286
287 if (wpa_drv_init_mesh(wpa_s)) {
288 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
289 return -1;
290 }
291
292 if (mconf->security != MESH_CONF_SEC_NONE) {
293 if (ssid->passphrase == NULL) {
294 wpa_printf(MSG_ERROR,
295 "mesh: Passphrase for SAE not configured");
296 goto out_free;
297 }
298
299 bss->conf->wpa = ssid->proto;
300 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
301
302 if (wpa_s->conf->sae_groups &&
303 wpa_s->conf->sae_groups[0] > 0) {
304 wpas_mesh_copy_groups(bss, wpa_s);
305 } else {
306 bss->conf->sae_groups =
307 os_malloc(sizeof(default_groups));
308 if (!bss->conf->sae_groups)
309 goto out_free;
310 os_memcpy(bss->conf->sae_groups, default_groups,
311 sizeof(default_groups));
312 }
313
314 len = os_strlen(ssid->passphrase);
315 bss->conf->ssid.wpa_passphrase =
316 dup_binstr(ssid->passphrase, len);
317
318 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
319 if (!wpa_s->mesh_rsn)
320 goto out_free;
321 }
322
323 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
324
325 return 0;
326 out_free:
327 wpa_supplicant_mesh_deinit(wpa_s);
328 return -ENOMEM;
329 }
330
331
wpa_mesh_notify_peer(struct wpa_supplicant * wpa_s,const u8 * addr,const u8 * ies,size_t ie_len)332 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
333 const u8 *ies, size_t ie_len)
334 {
335 struct ieee802_11_elems elems;
336
337 wpa_msg(wpa_s, MSG_INFO,
338 "new peer notification for " MACSTR, MAC2STR(addr));
339
340 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
341 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
342 MAC2STR(addr));
343 return;
344 }
345 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
346 }
347
348
wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant * wpa_s,struct wpabuf ** extra_ie)349 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
350 struct wpabuf **extra_ie)
351 {
352 /* EID + 0-length (wildcard) mesh-id */
353 size_t ielen = 2;
354
355 if (wpabuf_resize(extra_ie, ielen) == 0) {
356 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
357 wpabuf_put_u8(*extra_ie, 0);
358 }
359 }
360
361
wpa_supplicant_join_mesh(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)362 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
363 struct wpa_ssid *ssid)
364 {
365 struct wpa_driver_mesh_join_params params;
366 int ret = 0;
367
368 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
369 ret = -ENOENT;
370 goto out;
371 }
372
373 wpa_supplicant_mesh_deinit(wpa_s);
374
375 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
376 wpa_s->group_cipher = WPA_CIPHER_NONE;
377 wpa_s->mgmt_group_cipher = 0;
378
379 os_memset(¶ms, 0, sizeof(params));
380 params.meshid = ssid->ssid;
381 params.meshid_len = ssid->ssid_len;
382 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms.freq);
383 wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
384 wpa_s->mesh_vht_enabled = !!params.freq.vht_enabled;
385 if (params.freq.ht_enabled && params.freq.sec_channel_offset)
386 ssid->ht40 = params.freq.sec_channel_offset;
387 if (wpa_s->mesh_vht_enabled) {
388 ssid->vht = 1;
389 switch (params.freq.bandwidth) {
390 case 80:
391 if (params.freq.center_freq2) {
392 ssid->max_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
393 ssid->vht_center_freq2 =
394 params.freq.center_freq2;
395 } else {
396 ssid->max_oper_chwidth = VHT_CHANWIDTH_80MHZ;
397 }
398 break;
399 case 160:
400 ssid->max_oper_chwidth = VHT_CHANWIDTH_160MHZ;
401 break;
402 default:
403 ssid->max_oper_chwidth = VHT_CHANWIDTH_USE_HT;
404 break;
405 }
406 }
407 if (ssid->beacon_int > 0)
408 params.beacon_int = ssid->beacon_int;
409 else if (wpa_s->conf->beacon_int > 0)
410 params.beacon_int = wpa_s->conf->beacon_int;
411 if (ssid->dtim_period > 0)
412 params.dtim_period = ssid->dtim_period;
413 else if (wpa_s->conf->dtim_period > 0)
414 params.dtim_period = wpa_s->conf->dtim_period;
415 params.conf.max_peer_links = wpa_s->conf->max_peer_links;
416
417 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
418 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
419 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
420 wpa_s->conf->user_mpm = 1;
421 }
422
423 if (wpa_s->conf->user_mpm) {
424 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
425 params.conf.auto_plinks = 0;
426 } else {
427 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
428 params.conf.auto_plinks = 1;
429 }
430 params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
431
432 if (wpa_supplicant_mesh_init(wpa_s, ssid, ¶ms.freq)) {
433 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
434 wpa_drv_leave_mesh(wpa_s);
435 ret = -1;
436 goto out;
437 }
438
439 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
440 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
441 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
442 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
443 }
444
445 if (wpa_s->ifmsh) {
446 params.ies = wpa_s->ifmsh->mconf->rsn_ie;
447 params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len;
448 params.basic_rates = wpa_s->ifmsh->basic_rates;
449 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
450 params.conf.ht_opmode = wpa_s->ifmsh->bss[0]->iface->ht_op_mode;
451 }
452
453 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
454 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
455 ret = wpa_drv_join_mesh(wpa_s, ¶ms);
456 if (ret)
457 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
458
459 /* hostapd sets the interface down until we associate */
460 wpa_drv_set_operstate(wpa_s, 1);
461
462 if (!ret)
463 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
464
465 out:
466 return ret;
467 }
468
469
wpa_supplicant_leave_mesh(struct wpa_supplicant * wpa_s)470 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
471 {
472 int ret = 0;
473
474 wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
475
476 /* Need to send peering close messages first */
477 wpa_supplicant_mesh_deinit(wpa_s);
478
479 ret = wpa_drv_leave_mesh(wpa_s);
480 if (ret)
481 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
482
483 wpa_drv_set_operstate(wpa_s, 1);
484
485 return ret;
486 }
487
488
mesh_attr_text(const u8 * ies,size_t ies_len,char * buf,char * end)489 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
490 {
491 struct ieee802_11_elems elems;
492 char *mesh_id, *pos = buf;
493 u8 *bss_basic_rate_set;
494 int bss_basic_rate_set_len, ret, i;
495
496 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
497 return -1;
498
499 if (elems.mesh_id_len < 1)
500 return 0;
501
502 mesh_id = os_malloc(elems.mesh_id_len + 1);
503 if (mesh_id == NULL)
504 return -1;
505
506 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
507 mesh_id[elems.mesh_id_len] = '\0';
508 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
509 os_free(mesh_id);
510 if (os_snprintf_error(end - pos, ret))
511 return pos - buf;
512 pos += ret;
513
514 if (elems.mesh_config_len > 6) {
515 ret = os_snprintf(pos, end - pos,
516 "active_path_selection_protocol_id=0x%02x\n"
517 "active_path_selection_metric_id=0x%02x\n"
518 "congestion_control_mode_id=0x%02x\n"
519 "synchronization_method_id=0x%02x\n"
520 "authentication_protocol_id=0x%02x\n"
521 "mesh_formation_info=0x%02x\n"
522 "mesh_capability=0x%02x\n",
523 elems.mesh_config[0], elems.mesh_config[1],
524 elems.mesh_config[2], elems.mesh_config[3],
525 elems.mesh_config[4], elems.mesh_config[5],
526 elems.mesh_config[6]);
527 if (os_snprintf_error(end - pos, ret))
528 return pos - buf;
529 pos += ret;
530 }
531
532 bss_basic_rate_set = os_malloc(elems.supp_rates_len +
533 elems.ext_supp_rates_len);
534 if (bss_basic_rate_set == NULL)
535 return -1;
536
537 bss_basic_rate_set_len = 0;
538 for (i = 0; i < elems.supp_rates_len; i++) {
539 if (elems.supp_rates[i] & 0x80) {
540 bss_basic_rate_set[bss_basic_rate_set_len++] =
541 (elems.supp_rates[i] & 0x7f) * 5;
542 }
543 }
544 for (i = 0; i < elems.ext_supp_rates_len; i++) {
545 if (elems.ext_supp_rates[i] & 0x80) {
546 bss_basic_rate_set[bss_basic_rate_set_len++] =
547 (elems.ext_supp_rates[i] & 0x7f) * 5;
548 }
549 }
550 if (bss_basic_rate_set_len > 0) {
551 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
552 bss_basic_rate_set[0]);
553 if (os_snprintf_error(end - pos, ret))
554 goto fail;
555 pos += ret;
556
557 for (i = 1; i < bss_basic_rate_set_len; i++) {
558 ret = os_snprintf(pos, end - pos, " %d",
559 bss_basic_rate_set[i]);
560 if (os_snprintf_error(end - pos, ret))
561 goto fail;
562 pos += ret;
563 }
564
565 ret = os_snprintf(pos, end - pos, "\n");
566 if (os_snprintf_error(end - pos, ret))
567 goto fail;
568 pos += ret;
569 }
570 fail:
571 os_free(bss_basic_rate_set);
572
573 return pos - buf;
574 }
575
576
wpas_mesh_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)577 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
578 char *end)
579 {
580 return mesh_attr_text(ies, ies_len, buf, end);
581 }
582
583
wpas_mesh_get_ifname(struct wpa_supplicant * wpa_s,char * ifname,size_t len)584 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
585 size_t len)
586 {
587 char *ifname_ptr = wpa_s->ifname;
588 int res;
589
590 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
591 wpa_s->mesh_if_idx);
592 if (os_snprintf_error(len, res) ||
593 (os_strlen(ifname) >= IFNAMSIZ &&
594 os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
595 /* Try to avoid going over the IFNAMSIZ length limit */
596 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
597 if (os_snprintf_error(len, res))
598 return -1;
599 }
600 wpa_s->mesh_if_idx++;
601 return 0;
602 }
603
604
wpas_mesh_add_interface(struct wpa_supplicant * wpa_s,char * ifname,size_t len)605 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
606 size_t len)
607 {
608 struct wpa_interface iface;
609 struct wpa_supplicant *mesh_wpa_s;
610 u8 addr[ETH_ALEN];
611
612 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
613 return -1;
614
615 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
616 NULL) < 0) {
617 wpa_printf(MSG_ERROR,
618 "mesh: Failed to create new mesh interface");
619 return -1;
620 }
621 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
622 MACSTR, ifname, MAC2STR(addr));
623
624 os_memset(&iface, 0, sizeof(iface));
625 iface.ifname = ifname;
626 iface.driver = wpa_s->driver->name;
627 iface.driver_param = wpa_s->conf->driver_param;
628 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
629
630 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
631 if (!mesh_wpa_s) {
632 wpa_printf(MSG_ERROR,
633 "mesh: Failed to create new wpa_supplicant interface");
634 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
635 return -1;
636 }
637 mesh_wpa_s->mesh_if_created = 1;
638 return 0;
639 }
640
641
wpas_mesh_peer_remove(struct wpa_supplicant * wpa_s,const u8 * addr)642 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
643 {
644 return mesh_mpm_close_peer(wpa_s, addr);
645 }
646
647
wpas_mesh_peer_add(struct wpa_supplicant * wpa_s,const u8 * addr,int duration)648 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
649 int duration)
650 {
651 return mesh_mpm_connect_peer(wpa_s, addr, duration);
652 }
653