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 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 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 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 #ifdef CONFIG_IEEE80211W 88 conf->ieee80211w = ssid->ieee80211w; 89 if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) { 90 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP) 91 conf->ieee80211w = wpa_s->conf->pmf; 92 else 93 conf->ieee80211w = NO_MGMT_FRAME_PROTECTION; 94 } 95 #endif /* CONFIG_IEEE80211W */ 96 97 cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0); 98 if (cipher < 0 || cipher == WPA_CIPHER_TKIP) { 99 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher"); 100 os_free(conf); 101 return NULL; 102 } 103 conf->pairwise_cipher = cipher; 104 105 cipher = wpa_pick_group_cipher(ssid->group_cipher); 106 if (cipher < 0 || cipher == WPA_CIPHER_TKIP || 107 cipher == WPA_CIPHER_GTK_NOT_USED) { 108 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher"); 109 os_free(conf); 110 return NULL; 111 } 112 113 conf->group_cipher = cipher; 114 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) 115 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 116 117 /* defaults */ 118 conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP; 119 conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME; 120 conf->mesh_cc_id = 0; 121 conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET; 122 conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0; 123 conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries; 124 conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout; 125 conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout; 126 conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout; 127 128 return conf; 129 } 130 131 132 static void wpas_mesh_copy_groups(struct hostapd_data *bss, 133 struct wpa_supplicant *wpa_s) 134 { 135 int num_groups; 136 size_t groups_size; 137 138 for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0; 139 num_groups++) 140 ; 141 142 groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]); 143 bss->conf->sae_groups = os_malloc(groups_size); 144 if (bss->conf->sae_groups) 145 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups, 146 groups_size); 147 } 148 149 150 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s, 151 struct wpa_ssid *ssid, 152 struct hostapd_freq_params *freq) 153 { 154 struct hostapd_iface *ifmsh; 155 struct hostapd_data *bss; 156 struct hostapd_config *conf; 157 struct mesh_conf *mconf; 158 int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 }; 159 static int default_groups[] = { 19, 20, 21, 25, 26, -1 }; 160 size_t len; 161 int rate_len; 162 int frequency; 163 164 if (!wpa_s->conf->user_mpm) { 165 /* not much for us to do here */ 166 wpa_msg(wpa_s, MSG_WARNING, 167 "user_mpm is not enabled in configuration"); 168 return 0; 169 } 170 171 wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh)); 172 if (!ifmsh) 173 return -ENOMEM; 174 175 ifmsh->drv_flags = wpa_s->drv_flags; 176 ifmsh->num_bss = 1; 177 ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss, 178 sizeof(struct hostapd_data *)); 179 if (!ifmsh->bss) 180 goto out_free; 181 182 ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL); 183 if (!bss) 184 goto out_free; 185 186 os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN); 187 bss->driver = wpa_s->driver; 188 bss->drv_priv = wpa_s->drv_priv; 189 bss->iface = ifmsh; 190 bss->mesh_sta_free_cb = mesh_mpm_free_sta; 191 frequency = ssid->frequency; 192 if (frequency != freq->freq && 193 frequency == freq->freq + freq->sec_channel_offset * 20) { 194 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched"); 195 frequency = freq->freq; 196 } 197 wpa_s->assoc_freq = frequency; 198 wpa_s->current_ssid = ssid; 199 200 /* setup an AP config for auth processing */ 201 conf = hostapd_config_defaults(); 202 if (!conf) 203 goto out_free; 204 205 bss->conf = *conf->bss; 206 bss->conf->start_disabled = 1; 207 bss->conf->mesh = MESH_ENABLED; 208 bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity; 209 bss->iconf = conf; 210 ifmsh->conf = conf; 211 212 ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links; 213 ifmsh->bss[0]->dot11RSNASAERetransPeriod = 214 wpa_s->conf->dot11RSNASAERetransPeriod; 215 os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface)); 216 217 mconf = mesh_config_create(wpa_s, ssid); 218 if (!mconf) 219 goto out_free; 220 ifmsh->mconf = mconf; 221 222 /* need conf->hw_mode for supported rates. */ 223 conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel); 224 if (conf->hw_mode == NUM_HOSTAPD_MODES) { 225 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz", 226 frequency); 227 goto out_free; 228 } 229 if (ssid->ht40) 230 conf->secondary_channel = ssid->ht40; 231 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) { 232 conf->vht_oper_chwidth = ssid->max_oper_chwidth; 233 switch (conf->vht_oper_chwidth) { 234 case VHT_CHANWIDTH_80MHZ: 235 case VHT_CHANWIDTH_80P80MHZ: 236 ieee80211_freq_to_chan( 237 frequency, 238 &conf->vht_oper_centr_freq_seg0_idx); 239 conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2; 240 break; 241 case VHT_CHANWIDTH_160MHZ: 242 ieee80211_freq_to_chan( 243 frequency, 244 &conf->vht_oper_centr_freq_seg0_idx); 245 conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2; 246 conf->vht_oper_centr_freq_seg0_idx += 40 / 5; 247 break; 248 } 249 ieee80211_freq_to_chan(ssid->vht_center_freq2, 250 &conf->vht_oper_centr_freq_seg1_idx); 251 } 252 253 if (ssid->mesh_basic_rates == NULL) { 254 /* 255 * XXX: Hack! This is so an MPM which correctly sets the ERP 256 * mandatory rates as BSSBasicRateSet doesn't reject us. We 257 * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but 258 * this is way easier. This also makes our BSSBasicRateSet 259 * advertised in beacons match the one in peering frames, sigh. 260 */ 261 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) { 262 conf->basic_rates = os_memdup(basic_rates_erp, 263 sizeof(basic_rates_erp)); 264 if (!conf->basic_rates) 265 goto out_free; 266 } 267 } else { 268 rate_len = 0; 269 while (1) { 270 if (ssid->mesh_basic_rates[rate_len] < 1) 271 break; 272 rate_len++; 273 } 274 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int)); 275 if (conf->basic_rates == NULL) 276 goto out_free; 277 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates, 278 rate_len * sizeof(int)); 279 conf->basic_rates[rate_len] = -1; 280 } 281 282 if (hostapd_setup_interface(ifmsh)) { 283 wpa_printf(MSG_ERROR, 284 "Failed to initialize hostapd interface for mesh"); 285 return -1; 286 } 287 288 if (wpa_drv_init_mesh(wpa_s)) { 289 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver"); 290 return -1; 291 } 292 293 if (mconf->security != MESH_CONF_SEC_NONE) { 294 if (ssid->passphrase == NULL) { 295 wpa_printf(MSG_ERROR, 296 "mesh: Passphrase for SAE not configured"); 297 goto out_free; 298 } 299 300 bss->conf->wpa = ssid->proto; 301 bss->conf->wpa_key_mgmt = ssid->key_mgmt; 302 303 if (wpa_s->conf->sae_groups && 304 wpa_s->conf->sae_groups[0] > 0) { 305 wpas_mesh_copy_groups(bss, wpa_s); 306 } else { 307 bss->conf->sae_groups = 308 os_memdup(default_groups, 309 sizeof(default_groups)); 310 if (!bss->conf->sae_groups) 311 goto out_free; 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 } 330 331 332 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 } 347 348 349 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 } 360 361 362 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 if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) { 417 params.conf.rssi_threshold = ssid->mesh_rssi_threshold; 418 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD; 419 } 420 421 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) { 422 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH; 423 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE; 424 wpa_s->conf->user_mpm = 1; 425 } 426 427 if (wpa_s->conf->user_mpm) { 428 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM; 429 params.conf.auto_plinks = 0; 430 } else { 431 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM; 432 params.conf.auto_plinks = 1; 433 } 434 params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity; 435 436 if (wpa_supplicant_mesh_init(wpa_s, ssid, ¶ms.freq)) { 437 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh"); 438 wpa_drv_leave_mesh(wpa_s); 439 ret = -1; 440 goto out; 441 } 442 443 if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) { 444 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher; 445 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher; 446 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher; 447 } 448 449 if (wpa_s->ifmsh) { 450 params.ies = wpa_s->ifmsh->mconf->rsn_ie; 451 params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len; 452 params.basic_rates = wpa_s->ifmsh->basic_rates; 453 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE; 454 params.conf.ht_opmode = wpa_s->ifmsh->bss[0]->iface->ht_op_mode; 455 } 456 457 wpa_msg(wpa_s, MSG_INFO, "joining mesh %s", 458 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 459 ret = wpa_drv_join_mesh(wpa_s, ¶ms); 460 if (ret) 461 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret); 462 463 /* hostapd sets the interface down until we associate */ 464 wpa_drv_set_operstate(wpa_s, 1); 465 466 if (!ret) 467 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 468 469 out: 470 return ret; 471 } 472 473 474 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s) 475 { 476 int ret = 0; 477 478 wpa_msg(wpa_s, MSG_INFO, "leaving mesh"); 479 480 /* Need to send peering close messages first */ 481 wpa_supplicant_mesh_deinit(wpa_s); 482 483 ret = wpa_drv_leave_mesh(wpa_s); 484 if (ret) 485 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret); 486 487 wpa_drv_set_operstate(wpa_s, 1); 488 489 return ret; 490 } 491 492 493 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end) 494 { 495 struct ieee802_11_elems elems; 496 char *mesh_id, *pos = buf; 497 u8 *bss_basic_rate_set; 498 int bss_basic_rate_set_len, ret, i; 499 500 if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed) 501 return -1; 502 503 if (elems.mesh_id_len < 1) 504 return 0; 505 506 mesh_id = os_malloc(elems.mesh_id_len + 1); 507 if (mesh_id == NULL) 508 return -1; 509 510 os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len); 511 mesh_id[elems.mesh_id_len] = '\0'; 512 ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id); 513 os_free(mesh_id); 514 if (os_snprintf_error(end - pos, ret)) 515 return pos - buf; 516 pos += ret; 517 518 if (elems.mesh_config_len > 6) { 519 ret = os_snprintf(pos, end - pos, 520 "active_path_selection_protocol_id=0x%02x\n" 521 "active_path_selection_metric_id=0x%02x\n" 522 "congestion_control_mode_id=0x%02x\n" 523 "synchronization_method_id=0x%02x\n" 524 "authentication_protocol_id=0x%02x\n" 525 "mesh_formation_info=0x%02x\n" 526 "mesh_capability=0x%02x\n", 527 elems.mesh_config[0], elems.mesh_config[1], 528 elems.mesh_config[2], elems.mesh_config[3], 529 elems.mesh_config[4], elems.mesh_config[5], 530 elems.mesh_config[6]); 531 if (os_snprintf_error(end - pos, ret)) 532 return pos - buf; 533 pos += ret; 534 } 535 536 bss_basic_rate_set = os_malloc(elems.supp_rates_len + 537 elems.ext_supp_rates_len); 538 if (bss_basic_rate_set == NULL) 539 return -1; 540 541 bss_basic_rate_set_len = 0; 542 for (i = 0; i < elems.supp_rates_len; i++) { 543 if (elems.supp_rates[i] & 0x80) { 544 bss_basic_rate_set[bss_basic_rate_set_len++] = 545 (elems.supp_rates[i] & 0x7f) * 5; 546 } 547 } 548 for (i = 0; i < elems.ext_supp_rates_len; i++) { 549 if (elems.ext_supp_rates[i] & 0x80) { 550 bss_basic_rate_set[bss_basic_rate_set_len++] = 551 (elems.ext_supp_rates[i] & 0x7f) * 5; 552 } 553 } 554 if (bss_basic_rate_set_len > 0) { 555 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d", 556 bss_basic_rate_set[0]); 557 if (os_snprintf_error(end - pos, ret)) 558 goto fail; 559 pos += ret; 560 561 for (i = 1; i < bss_basic_rate_set_len; i++) { 562 ret = os_snprintf(pos, end - pos, " %d", 563 bss_basic_rate_set[i]); 564 if (os_snprintf_error(end - pos, ret)) 565 goto fail; 566 pos += ret; 567 } 568 569 ret = os_snprintf(pos, end - pos, "\n"); 570 if (os_snprintf_error(end - pos, ret)) 571 goto fail; 572 pos += ret; 573 } 574 fail: 575 os_free(bss_basic_rate_set); 576 577 return pos - buf; 578 } 579 580 581 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 582 char *end) 583 { 584 return mesh_attr_text(ies, ies_len, buf, end); 585 } 586 587 588 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname, 589 size_t len) 590 { 591 char *ifname_ptr = wpa_s->ifname; 592 int res; 593 594 res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr, 595 wpa_s->mesh_if_idx); 596 if (os_snprintf_error(len, res) || 597 (os_strlen(ifname) >= IFNAMSIZ && 598 os_strlen(wpa_s->ifname) < IFNAMSIZ)) { 599 /* Try to avoid going over the IFNAMSIZ length limit */ 600 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx); 601 if (os_snprintf_error(len, res)) 602 return -1; 603 } 604 wpa_s->mesh_if_idx++; 605 return 0; 606 } 607 608 609 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname, 610 size_t len) 611 { 612 struct wpa_interface iface; 613 struct wpa_supplicant *mesh_wpa_s; 614 u8 addr[ETH_ALEN]; 615 616 if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0) 617 return -1; 618 619 if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr, 620 NULL) < 0) { 621 wpa_printf(MSG_ERROR, 622 "mesh: Failed to create new mesh interface"); 623 return -1; 624 } 625 wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr " 626 MACSTR, ifname, MAC2STR(addr)); 627 628 os_memset(&iface, 0, sizeof(iface)); 629 iface.ifname = ifname; 630 iface.driver = wpa_s->driver->name; 631 iface.driver_param = wpa_s->conf->driver_param; 632 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 633 634 mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 635 if (!mesh_wpa_s) { 636 wpa_printf(MSG_ERROR, 637 "mesh: Failed to create new wpa_supplicant interface"); 638 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname); 639 return -1; 640 } 641 mesh_wpa_s->mesh_if_created = 1; 642 return 0; 643 } 644 645 646 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr) 647 { 648 return mesh_mpm_close_peer(wpa_s, addr); 649 } 650 651 652 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr, 653 int duration) 654 { 655 return mesh_mpm_connect_peer(wpa_s, addr, duration); 656 } 657
