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->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 } 151 152 153 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 } 169 170 171 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 } 207 208 209 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 } 242 243 244 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 } 308 309 310 static void wpas_mesh_complete_cb(void *arg) 311 { 312 struct wpa_supplicant *wpa_s = arg; 313 314 wpas_mesh_complete(wpa_s); 315 } 316 317 318 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 } 352 353 354 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 } 379 380 381 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 } 580 581 582 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 } 597 598 599 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 } 610 611 612 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 } 713 714 715 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 } 733 734 735 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 } 821 822 823 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 } 828 829 830 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 } 849 850 851 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 } 886 887 888 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr) 889 { 890 return mesh_mpm_close_peer(wpa_s, addr); 891 } 892 893 894 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
Indexes created Tue Jun 23 00:25:03 UTC 2026