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 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 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 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->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries; 144 conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout; 145 conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout; 146 conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout; 147 148 return conf; 149 } 150 151 152 static void wpas_mesh_copy_groups(struct hostapd_data *bss, 153 struct wpa_supplicant *wpa_s) 154 { 155 int num_groups; 156 size_t groups_size; 157 158 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0; 159 num_groups++) 160 ; 161 162 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]); 163 bss->conf->sae_groups = os_malloc(groups_size); 164 if (bss->conf->sae_groups) 165 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups, 166 groups_size); 167 } 168 169 170 static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s) 171 { 172 struct hostapd_iface *ifmsh = wpa_s->ifmsh; 173 struct wpa_ssid *ssid = wpa_s->current_ssid; 174 struct hostapd_data *bss = ifmsh->bss[0]; 175 static int default_groups[] = { 19, 20, 21, 25, 26, -1 }; 176 const char *password; 177 size_t len; 178 179 password = ssid->sae_password; 180 if (!password) 181 password = ssid->passphrase; 182 if (!password) { 183 wpa_printf(MSG_ERROR, 184 "mesh: Passphrase for SAE not configured"); 185 return -1; 186 } 187 188 bss->conf->wpa = ssid->proto; 189 bss->conf->wpa_key_mgmt = ssid->key_mgmt; 190 191 if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) { 192 wpas_mesh_copy_groups(bss, wpa_s); 193 } else { 194 bss->conf->sae_groups = os_memdup(default_groups, 195 sizeof(default_groups)); 196 if (!bss->conf->sae_groups) 197 return -1; 198 } 199 200 len = os_strlen(password); 201 bss->conf->ssid.wpa_passphrase = dup_binstr(password, len); 202 203 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf); 204 return !wpa_s->mesh_rsn ? -1 : 0; 205 } 206 207 208 static int wpas_mesh_update_freq_params(struct wpa_supplicant *wpa_s) 209 { 210 struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params; 211 struct hostapd_iface *ifmsh = wpa_s->ifmsh; 212 struct he_capabilities *he_capab = NULL; 213 214 if (ifmsh->current_mode) 215 he_capab = &ifmsh->current_mode->he_capab[IEEE80211_MODE_MESH]; 216 217 if (hostapd_set_freq_params( 218 ¶ms->freq, 219 ifmsh->conf->hw_mode, 220 ifmsh->freq, 221 ifmsh->conf->channel, 222 ifmsh->conf->enable_edmg, 223 ifmsh->conf->edmg_channel, 224 ifmsh->conf->ieee80211n, 225 ifmsh->conf->ieee80211ac, 226 ifmsh->conf->ieee80211ax, 227 ifmsh->conf->secondary_channel, 228 hostapd_get_oper_chwidth(ifmsh->conf), 229 hostapd_get_oper_centr_freq_seg0_idx(ifmsh->conf), 230 hostapd_get_oper_centr_freq_seg1_idx(ifmsh->conf), 231 ifmsh->conf->vht_capab, 232 he_capab)) { 233 wpa_printf(MSG_ERROR, "Error updating mesh frequency params"); 234 wpa_supplicant_mesh_deinit(wpa_s, true); 235 return -1; 236 } 237 238 return 0; 239 } 240 241 242 static int wpas_mesh_complete(struct wpa_supplicant *wpa_s) 243 { 244 struct hostapd_iface *ifmsh = wpa_s->ifmsh; 245 struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params; 246 struct wpa_ssid *ssid = wpa_s->current_ssid; 247 int ret; 248 249 if (!params || !ssid || !ifmsh) { 250 wpa_printf(MSG_ERROR, "mesh: %s called without active mesh", 251 __func__); 252 return -1; 253 } 254 255 /* 256 * Update channel configuration if the channel has changed since the 257 * initial setting, i.e., due to DFS radar detection during CAC. 258 */ 259 if (ifmsh->freq > 0 && ifmsh->freq != params->freq.freq) { 260 wpa_s->assoc_freq = ifmsh->freq; 261 ssid->frequency = ifmsh->freq; 262 if (wpas_mesh_update_freq_params(wpa_s) < 0) 263 return -1; 264 } 265 266 if (ifmsh->mconf->security != MESH_CONF_SEC_NONE && 267 wpas_mesh_init_rsn(wpa_s)) { 268 wpa_printf(MSG_ERROR, 269 "mesh: RSN initialization failed - deinit mesh"); 270 wpa_supplicant_mesh_deinit(wpa_s, false); 271 return -1; 272 } 273 274 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) { 275 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher; 276 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher; 277 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher; 278 } 279 280 params->ies = ifmsh->mconf->rsn_ie; 281 params->ie_len = ifmsh->mconf->rsn_ie_len; 282 params->basic_rates = ifmsh->basic_rates; 283 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE; 284 params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode; 285 286 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s", 287 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 288 ret = wpa_drv_join_mesh(wpa_s, params); 289 if (ret) 290 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret); 291 292 /* hostapd sets the interface down until we associate */ 293 wpa_drv_set_operstate(wpa_s, 1); 294 295 if (!ret) { 296 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 297 298 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_STARTED "ssid=\"%s\" id=%d", 299 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 300 ssid->id); 301 wpas_notify_mesh_group_started(wpa_s, ssid); 302 } 303 304 return ret; 305 } 306 307 308 static void wpas_mesh_complete_cb(void *arg) 309 { 310 struct wpa_supplicant *wpa_s = arg; 311 312 wpas_mesh_complete(wpa_s); 313 } 314 315 316 static int wpa_supplicant_mesh_enable_iface_cb(struct hostapd_iface *ifmsh) 317 { 318 struct wpa_supplicant *wpa_s = ifmsh->owner; 319 struct hostapd_data *bss; 320 321 ifmsh->mconf = mesh_config_create(wpa_s, wpa_s->current_ssid); 322 323 bss = ifmsh->bss[0]; 324 bss->msg_ctx = wpa_s; 325 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN); 326 bss->driver = wpa_s->driver; 327 bss->drv_priv = wpa_s->drv_priv; 328 bss->iface = ifmsh; 329 bss->mesh_sta_free_cb = mesh_mpm_free_sta; 330 bss->setup_complete_cb = wpas_mesh_complete_cb; 331 bss->setup_complete_cb_ctx = wpa_s; 332 333 bss->conf->start_disabled = 1; 334 bss->conf->mesh = MESH_ENABLED; 335 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity; 336 337 if (wpa_drv_init_mesh(wpa_s)) { 338 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver"); 339 return -1; 340 } 341 342 if (hostapd_setup_interface(ifmsh)) { 343 wpa_printf(MSG_ERROR, 344 "Failed to initialize hostapd interface for mesh"); 345 return -1; 346 } 347 348 return 0; 349 } 350 351 352 static int wpa_supplicant_mesh_disable_iface_cb(struct hostapd_iface *ifmsh) 353 { 354 struct wpa_supplicant *wpa_s = ifmsh->owner; 355 size_t j; 356 357 wpa_supplicant_mesh_deinit(wpa_s, false); 358 359 #ifdef NEED_AP_MLME 360 for (j = 0; j < ifmsh->num_bss; j++) 361 hostapd_cleanup_cs_params(ifmsh->bss[j]); 362 #endif /* NEED_AP_MLME */ 363 364 /* Same as hostapd_interface_deinit() without deinitializing control 365 * interface */ 366 for (j = 0; j < ifmsh->num_bss; j++) { 367 struct hostapd_data *hapd = ifmsh->bss[j]; 368 369 hostapd_bss_deinit_no_free(hapd); 370 hostapd_free_hapd_data(hapd); 371 } 372 373 hostapd_cleanup_iface_partial(ifmsh); 374 375 return 0; 376 } 377 378 379 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s, 380 struct wpa_ssid *ssid, 381 struct hostapd_freq_params *freq) 382 { 383 struct hostapd_iface *ifmsh; 384 struct hostapd_data *bss; 385 struct hostapd_config *conf; 386 struct mesh_conf *mconf; 387 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 }; 388 int rate_len; 389 int frequency; 390 391 if (!wpa_s->conf->user_mpm) { 392 /* not much for us to do here */ 393 wpa_msg(wpa_s, MSG_WARNING, 394 "user_mpm is not enabled in configuration"); 395 return 0; 396 } 397 398 wpa_s->ifmsh = ifmsh = hostapd_alloc_iface(); 399 if (!ifmsh) 400 return -ENOMEM; 401 402 ifmsh->owner = wpa_s; 403 ifmsh->drv_flags = wpa_s->drv_flags; 404 ifmsh->drv_flags2 = wpa_s->drv_flags2; 405 ifmsh->num_bss = 1; 406 ifmsh->enable_iface_cb = wpa_supplicant_mesh_enable_iface_cb; 407 ifmsh->disable_iface_cb = wpa_supplicant_mesh_disable_iface_cb; 408 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss, 409 sizeof(struct hostapd_data *)); 410 if (!ifmsh->bss) 411 goto out_free; 412 413 ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL); 414 if (!bss) 415 goto out_free; 416 417 ifmsh->bss[0]->msg_ctx = wpa_s; 418 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN); 419 bss->driver = wpa_s->driver; 420 bss->drv_priv = wpa_s->drv_priv; 421 bss->iface = ifmsh; 422 bss->mesh_sta_free_cb = mesh_mpm_free_sta; 423 bss->setup_complete_cb = wpas_mesh_complete_cb; 424 bss->setup_complete_cb_ctx = wpa_s; 425 frequency = ssid->frequency; 426 if (frequency != freq->freq && 427 frequency == freq->freq + freq->sec_channel_offset * 20) { 428 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched"); 429 frequency = freq->freq; 430 ssid->frequency = frequency; 431 } 432 wpa_s->assoc_freq = frequency; 433 wpa_s->current_ssid = ssid; 434 435 /* setup an AP config for auth processing */ 436 conf = hostapd_config_defaults(); 437 if (!conf) 438 goto out_free; 439 440 if (is_6ghz_freq(freq->freq)) { 441 /* 442 * IEEE Std 802.11ax-2021, 12.12.2: 443 * The STA shall use management frame protection (MFPR=1) when 444 * using RSN. 445 */ 446 ssid->ieee80211w = MGMT_FRAME_PROTECTION_REQUIRED; 447 448 /* Set mandatory op_class parameter for setting up BSS */ 449 switch (freq->bandwidth) { 450 case 20: 451 if (freq->freq == 5935) 452 conf->op_class = 136; 453 else 454 conf->op_class = 131; 455 break; 456 case 40: 457 conf->op_class = 132; 458 break; 459 case 80: 460 conf->op_class = 133; 461 break; 462 case 160: 463 conf->op_class = 134; 464 break; 465 default: 466 conf->op_class = 131; 467 break; 468 } 469 } 470 471 bss->conf = *conf->bss; 472 bss->conf->start_disabled = 1; 473 bss->conf->mesh = MESH_ENABLED; 474 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity; 475 476 if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes, 477 wpa_s->hw.num_modes) && wpa_s->conf->country[0]) { 478 conf->ieee80211h = 1; 479 conf->ieee80211d = 1; 480 conf->country[0] = wpa_s->conf->country[0]; 481 conf->country[1] = wpa_s->conf->country[1]; 482 conf->country[2] = ' '; 483 wpa_s->mesh_params->handle_dfs = true; 484 } 485 486 bss->iconf = conf; 487 ifmsh->conf = conf; 488 489 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links; 490 ifmsh->bss[0]->dot11RSNASAERetransPeriod = 491 wpa_s->conf->dot11RSNASAERetransPeriod; 492 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface)); 493 494 mconf = mesh_config_create(wpa_s, ssid); 495 if (!mconf) 496 goto out_free; 497 ifmsh->mconf = mconf; 498 499 /* need conf->hw_mode for supported rates. */ 500 conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel); 501 if (conf->hw_mode == NUM_HOSTAPD_MODES) { 502 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz", 503 frequency); 504 goto out_free; 505 } 506 507 if (ssid->mesh_basic_rates == NULL) { 508 /* 509 * XXX: Hack! This is so an MPM which correctly sets the ERP 510 * mandatory rates as BSSBasicRateSet doesn't reject us. We 511 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but 512 * this is way easier. This also makes our BSSBasicRateSet 513 * advertised in beacons match the one in peering frames, sigh. 514 */ 515 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) { 516 conf->basic_rates = os_memdup(basic_rates_erp, 517 sizeof(basic_rates_erp)); 518 if (!conf->basic_rates) 519 goto out_free; 520 } 521 } else { 522 rate_len = 0; 523 while (1) { 524 if (ssid->mesh_basic_rates[rate_len] < 1) 525 break; 526 rate_len++; 527 } 528 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int)); 529 if (conf->basic_rates == NULL) 530 goto out_free; 531 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates, 532 rate_len * sizeof(int)); 533 conf->basic_rates[rate_len] = -1; 534 } 535 536 /* While it can enhance performance to switch the primary channel, which 537 * is also the secondary channel of another network at the same time), 538 * to the other primary channel, problems exist with this in mesh 539 * networks. 540 * 541 * Example with problems: 542 * - 3 mesh nodes M1-M3, freq (5200, 5180) 543 * - other node O1, e.g. AP mode, freq (5180, 5200), 544 * Locations: O1 M1 M2 M3 545 * 546 * M3 can only send frames to M1 over M2, no direct connection is 547 * possible 548 * Start O1, M1 and M3 first, M1 or O1 will switch channels to align 549 * with* each other. M3 does not swap, because M1 or O1 cannot be 550 * reached. M2 is started afterwards and can either connect to M3 or M1 551 * because of this primary secondary channel switch. 552 * 553 * Solutions: (1) central coordination -> not always possible 554 * (2) disable pri/sec channel switch in mesh networks 555 * 556 * In AP mode, when all nodes can work independently, this poses of 557 * course no problem, therefore disable it only in mesh mode. */ 558 conf->no_pri_sec_switch = 1; 559 wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf); 560 561 if (wpa_drv_init_mesh(wpa_s)) { 562 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver"); 563 return -1; 564 } 565 566 if (hostapd_setup_interface(ifmsh)) { 567 wpa_printf(MSG_ERROR, 568 "Failed to initialize hostapd interface for mesh"); 569 return -1; 570 } 571 572 return 0; 573 out_free: 574 wpa_supplicant_mesh_deinit(wpa_s, true); 575 return -ENOMEM; 576 } 577 578 579 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr, 580 const u8 *ies, size_t ie_len) 581 { 582 struct ieee802_11_elems elems; 583 584 wpa_msg(wpa_s, MSG_INFO, 585 "new peer notification for " MACSTR, MAC2STR(addr)); 586 587 if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) { 588 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR, 589 MAC2STR(addr)); 590 return; 591 } 592 wpa_mesh_new_mesh_peer(wpa_s, addr, &elems); 593 } 594 595 596 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s, 597 struct wpabuf **extra_ie) 598 { 599 /* EID + 0-length (wildcard) mesh-id */ 600 size_t ielen = 2; 601 602 if (wpabuf_resize(extra_ie, ielen) == 0) { 603 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID); 604 wpabuf_put_u8(*extra_ie, 0); 605 } 606 } 607 608 609 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s, 610 struct wpa_ssid *ssid) 611 { 612 struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params)); 613 int ret = 0; 614 615 if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency || 616 !params) { 617 ret = -ENOENT; 618 os_free(params); 619 goto out; 620 } 621 622 wpa_supplicant_mesh_deinit(wpa_s, true); 623 624 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 625 wpa_s->group_cipher = WPA_CIPHER_NONE; 626 wpa_s->mgmt_group_cipher = 0; 627 628 params->meshid = ssid->ssid; 629 params->meshid_len = ssid->ssid_len; 630 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms->freq); 631 wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled; 632 wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled; 633 wpa_s->mesh_he_enabled = !!params->freq.he_enabled; 634 if (params->freq.ht_enabled && params->freq.sec_channel_offset) 635 ssid->ht40 = params->freq.sec_channel_offset; 636 637 if (wpa_s->mesh_vht_enabled) { 638 ssid->vht = 1; 639 ssid->vht_center_freq1 = params->freq.center_freq1; 640 switch (params->freq.bandwidth) { 641 case 80: 642 if (params->freq.center_freq2) { 643 ssid->max_oper_chwidth = CHANWIDTH_80P80MHZ; 644 ssid->vht_center_freq2 = 645 params->freq.center_freq2; 646 } else { 647 ssid->max_oper_chwidth = CHANWIDTH_80MHZ; 648 } 649 break; 650 case 160: 651 ssid->max_oper_chwidth = CHANWIDTH_160MHZ; 652 break; 653 default: 654 ssid->max_oper_chwidth = CHANWIDTH_USE_HT; 655 break; 656 } 657 } 658 if (wpa_s->mesh_he_enabled) 659 ssid->he = 1; 660 if (ssid->beacon_int > 0) 661 params->beacon_int = ssid->beacon_int; 662 else if (wpa_s->conf->beacon_int > 0) 663 params->beacon_int = wpa_s->conf->beacon_int; 664 if (ssid->dtim_period > 0) 665 params->dtim_period = ssid->dtim_period; 666 else if (wpa_s->conf->dtim_period > 0) 667 params->dtim_period = wpa_s->conf->dtim_period; 668 params->conf.max_peer_links = wpa_s->conf->max_peer_links; 669 if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) { 670 params->conf.rssi_threshold = ssid->mesh_rssi_threshold; 671 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD; 672 } 673 674 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) { 675 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH; 676 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE; 677 wpa_s->conf->user_mpm = 1; 678 } 679 680 if (wpa_s->conf->user_mpm) { 681 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM; 682 params->conf.auto_plinks = 0; 683 } else { 684 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM; 685 params->conf.auto_plinks = 1; 686 } 687 params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity; 688 689 os_free(wpa_s->mesh_params); 690 wpa_s->mesh_params = params; 691 if (wpa_supplicant_mesh_init(wpa_s, ssid, ¶ms->freq)) { 692 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh"); 693 wpa_supplicant_leave_mesh(wpa_s, true); 694 ret = -1; 695 goto out; 696 } 697 698 out: 699 return ret; 700 } 701 702 703 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s, bool need_deinit) 704 { 705 int ret = 0; 706 707 wpa_msg(wpa_s, MSG_INFO, "leaving mesh"); 708 709 /* Need to send peering close messages first */ 710 if (need_deinit) 711 wpa_supplicant_mesh_deinit(wpa_s, true); 712 713 ret = wpa_drv_leave_mesh(wpa_s); 714 if (ret) 715 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret); 716 717 wpa_drv_set_operstate(wpa_s, 1); 718 719 return ret; 720 } 721 722 723 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end) 724 { 725 struct ieee802_11_elems elems; 726 char *mesh_id, *pos = buf; 727 u8 *bss_basic_rate_set; 728 int bss_basic_rate_set_len, ret, i; 729 730 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed) 731 return -1; 732 733 if (elems.mesh_id_len < 1) 734 return 0; 735 736 mesh_id = os_malloc(elems.mesh_id_len + 1); 737 if (mesh_id == NULL) 738 return -1; 739 740 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len); 741 mesh_id[elems.mesh_id_len] = '\0'; 742 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id); 743 os_free(mesh_id); 744 if (os_snprintf_error(end - pos, ret)) 745 return pos - buf; 746 pos += ret; 747 748 if (elems.mesh_config_len > 6) { 749 ret = os_snprintf(pos, end - pos, 750 "active_path_selection_protocol_id=0x%02x\n" 751 "active_path_selection_metric_id=0x%02x\n" 752 "congestion_control_mode_id=0x%02x\n" 753 "synchronization_method_id=0x%02x\n" 754 "authentication_protocol_id=0x%02x\n" 755 "mesh_formation_info=0x%02x\n" 756 "mesh_capability=0x%02x\n", 757 elems.mesh_config[0], elems.mesh_config[1], 758 elems.mesh_config[2], elems.mesh_config[3], 759 elems.mesh_config[4], elems.mesh_config[5], 760 elems.mesh_config[6]); 761 if (os_snprintf_error(end - pos, ret)) 762 return pos - buf; 763 pos += ret; 764 } 765 766 bss_basic_rate_set = os_malloc(elems.supp_rates_len + 767 elems.ext_supp_rates_len); 768 if (bss_basic_rate_set == NULL) 769 return -1; 770 771 bss_basic_rate_set_len = 0; 772 for (i = 0; i < elems.supp_rates_len; i++) { 773 if (elems.supp_rates[i] & 0x80) { 774 bss_basic_rate_set[bss_basic_rate_set_len++] = 775 (elems.supp_rates[i] & 0x7f) * 5; 776 } 777 } 778 for (i = 0; i < elems.ext_supp_rates_len; i++) { 779 if (elems.ext_supp_rates[i] & 0x80) { 780 bss_basic_rate_set[bss_basic_rate_set_len++] = 781 (elems.ext_supp_rates[i] & 0x7f) * 5; 782 } 783 } 784 if (bss_basic_rate_set_len > 0) { 785 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d", 786 bss_basic_rate_set[0]); 787 if (os_snprintf_error(end - pos, ret)) 788 goto fail; 789 pos += ret; 790 791 for (i = 1; i < bss_basic_rate_set_len; i++) { 792 ret = os_snprintf(pos, end - pos, " %d", 793 bss_basic_rate_set[i]); 794 if (os_snprintf_error(end - pos, ret)) 795 goto fail; 796 pos += ret; 797 } 798 799 ret = os_snprintf(pos, end - pos, "\n"); 800 if (os_snprintf_error(end - pos, ret)) 801 goto fail; 802 pos += ret; 803 } 804 fail: 805 os_free(bss_basic_rate_set); 806 807 return pos - buf; 808 } 809 810 811 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 812 char *end) 813 { 814 return mesh_attr_text(ies, ies_len, buf, end); 815 } 816 817 818 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname, 819 size_t len) 820 { 821 char *ifname_ptr = wpa_s->ifname; 822 int res; 823 824 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr, 825 wpa_s->mesh_if_idx); 826 if (os_snprintf_error(len, res) || 827 (os_strlen(ifname) >= IFNAMSIZ && 828 os_strlen(wpa_s->ifname) < IFNAMSIZ)) { 829 /* Try to avoid going over the IFNAMSIZ length limit */ 830 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx); 831 if (os_snprintf_error(len, res)) 832 return -1; 833 } 834 wpa_s->mesh_if_idx++; 835 return 0; 836 } 837 838 839 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname, 840 size_t len) 841 { 842 struct wpa_interface iface; 843 struct wpa_supplicant *mesh_wpa_s; 844 u8 addr[ETH_ALEN]; 845 846 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0) 847 return -1; 848 849 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr, 850 NULL) < 0) { 851 wpa_printf(MSG_ERROR, 852 "mesh: Failed to create new mesh interface"); 853 return -1; 854 } 855 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr " 856 MACSTR, ifname, MAC2STR(addr)); 857 858 os_memset(&iface, 0, sizeof(iface)); 859 iface.ifname = ifname; 860 iface.driver = wpa_s->driver->name; 861 iface.driver_param = wpa_s->conf->driver_param; 862 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 863 864 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 865 if (!mesh_wpa_s) { 866 wpa_printf(MSG_ERROR, 867 "mesh: Failed to create new wpa_supplicant interface"); 868 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname); 869 return -1; 870 } 871 mesh_wpa_s->mesh_if_created = 1; 872 return 0; 873 } 874 875 876 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr) 877 { 878 return mesh_mpm_close_peer(wpa_s, addr); 879 } 880 881 882 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr, 883 int duration) 884 { 885 return mesh_mpm_connect_peer(wpa_s, addr, duration); 886 } 887