contrib/wpa/wpa_supplicant/mesh.c

   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         os_free(wpa_s->mesh_params);
  38         wpa_s->mesh_params = NULL;
  39         /* TODO: leave mesh (stop beacon). This will happen on link down
  40          * anyway, so it's not urgent */
  41 }
  42
  43
  44 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
  45                                       struct hostapd_iface *ifmsh)
  46 {
  47         if (!ifmsh)
  48                 return;
  49
  50         if (ifmsh->mconf) {
  51                 mesh_mpm_deinit(wpa_s, ifmsh);
  52                 if (ifmsh->mconf->rsn_ie) {
  53                         ifmsh->mconf->rsn_ie = NULL;
  54                         /* We cannot free this struct
  55                          * because wpa_authenticator on
  56                          * hostapd side is also using it
  57                          * for now just set to NULL and
  58                          * let hostapd code free it.
  59                          */
  60                 }
  61                 os_free(ifmsh->mconf);
  62                 ifmsh->mconf = NULL;
  63         }
  64
  65         /* take care of shared data */
  66         hostapd_interface_deinit(ifmsh);
  67         hostapd_interface_free(ifmsh);
  68 }
  69
  70
  71 static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
  72                                              struct wpa_ssid *ssid)
  73 {
  74         struct mesh_conf *conf;
  75         int cipher;
  76
  77         conf = os_zalloc(sizeof(struct mesh_conf));
  78         if (!conf)
  79                 return NULL;
  80
  81         os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
  82         conf->meshid_len = ssid->ssid_len;
  83
  84         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
  85                 conf->security |= MESH_CONF_SEC_AUTH |
  86                         MESH_CONF_SEC_AMPE;
  87         else
  88                 conf->security |= MESH_CONF_SEC_NONE;
  89 #ifdef CONFIG_IEEE80211W
  90         conf->ieee80211w = ssid->ieee80211w;
  91         if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
  92                 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
  93                         conf->ieee80211w = wpa_s->conf->pmf;
  94                 else
  95                         conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
  96         }
  97 #endif /* CONFIG_IEEE80211W */
  98 #ifdef CONFIG_OCV
  99         conf->ocv = ssid->ocv;
 100 #endif /* CONFIG_OCV */
 101
 102         cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
 103         if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
 104                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
 105                 os_free(conf);
 106                 return NULL;
 107         }
 108         conf->pairwise_cipher = cipher;
 109
 110         cipher = wpa_pick_group_cipher(ssid->group_cipher);
 111         if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
 112             cipher == WPA_CIPHER_GTK_NOT_USED) {
 113                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
 114                 os_free(conf);
 115                 return NULL;
 116         }
 117
 118         conf->group_cipher = cipher;
 119         if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION)
 120                 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
 121
 122         /* defaults */
 123         conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
 124         conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
 125         conf->mesh_cc_id = 0;
 126         conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
 127         conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
 128         conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
 129         conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
 130         conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
 131         conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
 132
 133         return conf;
 134 }
 135
 136
 137 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
 138                                   struct wpa_supplicant *wpa_s)
 139 {
 140         int num_groups;
 141         size_t groups_size;
 142
 143         for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
 144              num_groups++)
 145                 ;
 146
 147         groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
 148         bss->conf->sae_groups = os_malloc(groups_size);
 149         if (bss->conf->sae_groups)
 150                 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
 151                           groups_size);
 152 }
 153
 154
 155 static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
 156 {
 157         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 158         struct wpa_ssid *ssid = wpa_s->current_ssid;
 159         struct hostapd_data *bss = ifmsh->bss[0];
 160         static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
 161         const char *password;
 162         size_t len;
 163
 164         password = ssid->sae_password;
 165         if (!password)
 166                 password = ssid->passphrase;
 167         if (!password) {
 168                 wpa_printf(MSG_ERROR,
 169                            "mesh: Passphrase for SAE not configured");
 170                 return -1;
 171         }
 172
 173         bss->conf->wpa = ssid->proto;
 174         bss->conf->wpa_key_mgmt = ssid->key_mgmt;
 175
 176         if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) {
 177                 wpas_mesh_copy_groups(bss, wpa_s);
 178         } else {
 179                 bss->conf->sae_groups = os_memdup(default_groups,
 180                                                   sizeof(default_groups));
 181                 if (!bss->conf->sae_groups)
 182                         return -1;
 183         }
 184
 185         len = os_strlen(password);
 186         bss->conf->ssid.wpa_passphrase = dup_binstr(password, len);
 187
 188         wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf);
 189         return !wpa_s->mesh_rsn ? -1 : 0;
 190 }
 191
 192
 193 static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
 194 {
 195         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 196         struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
 197         struct wpa_ssid *ssid = wpa_s->current_ssid;
 198         int ret;
 199
 200         if (!params || !ssid || !ifmsh) {
 201                 wpa_printf(MSG_ERROR, "mesh: %s called without active mesh",
 202                            __func__);
 203                 return -1;
 204         }
 205
 206         if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
 207             wpas_mesh_init_rsn(wpa_s)) {
 208                 wpa_printf(MSG_ERROR,
 209                            "mesh: RSN initialization failed - deinit mesh");
 210                 wpa_supplicant_mesh_deinit(wpa_s);
 211                 return -1;
 212         }
 213
 214         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 215                 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
 216                 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
 217                 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
 218         }
 219
 220         params->ies = ifmsh->mconf->rsn_ie;
 221         params->ie_len = ifmsh->mconf->rsn_ie_len;
 222         params->basic_rates = ifmsh->basic_rates;
 223         params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
 224         params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode;
 225
 226         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 227                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 228         ret = wpa_drv_join_mesh(wpa_s, params);
 229         if (ret)
 230                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
 231
 232         /* hostapd sets the interface down until we associate */
 233         wpa_drv_set_operstate(wpa_s, 1);
 234
 235         if (!ret)
 236                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 237
 238         return ret;
 239 }
 240
 241
 242 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
 243                                     struct wpa_ssid *ssid,
 244                                     struct hostapd_freq_params *freq)
 245 {
 246         struct hostapd_iface *ifmsh;
 247         struct hostapd_data *bss;
 248         struct hostapd_config *conf;
 249         struct mesh_conf *mconf;
 250         int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
 251         int rate_len;
 252         int frequency;
 253
 254         if (!wpa_s->conf->user_mpm) {
 255                 /* not much for us to do here */
 256                 wpa_msg(wpa_s, MSG_WARNING,
 257                         "user_mpm is not enabled in configuration");
 258                 return 0;
 259         }
 260
 261         wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
 262         if (!ifmsh)
 263                 return -ENOMEM;
 264
 265         ifmsh->drv_flags = wpa_s->drv_flags;
 266         ifmsh->num_bss = 1;
 267         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 268                                sizeof(struct hostapd_data *));
 269         if (!ifmsh->bss)
 270                 goto out_free;
 271
 272         ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
 273         if (!bss)
 274                 goto out_free;
 275
 276         ifmsh->bss[0]->msg_ctx = wpa_s;
 277         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 278         bss->driver = wpa_s->driver;
 279         bss->drv_priv = wpa_s->drv_priv;
 280         bss->iface = ifmsh;
 281         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 282         frequency = ssid->frequency;
 283         if (frequency != freq->freq &&
 284             frequency == freq->freq + freq->sec_channel_offset * 20) {
 285                 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
 286                 frequency = freq->freq;
 287         }
 288         wpa_s->assoc_freq = frequency;
 289         wpa_s->current_ssid = ssid;
 290
 291         /* setup an AP config for auth processing */
 292         conf = hostapd_config_defaults();
 293         if (!conf)
 294                 goto out_free;
 295
 296         bss->conf = *conf->bss;
 297         bss->conf->start_disabled = 1;
 298         bss->conf->mesh = MESH_ENABLED;
 299         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 300
 301         if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
 302                              wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
 303                 conf->ieee80211h = 1;
 304                 conf->ieee80211d = 1;
 305                 conf->country[0] = wpa_s->conf->country[0];
 306                 conf->country[1] = wpa_s->conf->country[1];
 307                 conf->country[2] = ' ';
 308         }
 309
 310         bss->iconf = conf;
 311         ifmsh->conf = conf;
 312
 313         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 314         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 315                 wpa_s->conf->dot11RSNASAERetransPeriod;
 316         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 317
 318         mconf = mesh_config_create(wpa_s, ssid);
 319         if (!mconf)
 320                 goto out_free;
 321         ifmsh->mconf = mconf;
 322
 323         /* need conf->hw_mode for supported rates. */
 324         conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
 325         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 326                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 327                            frequency);
 328                 goto out_free;
 329         }
 330         if (ssid->ht40)
 331                 conf->secondary_channel = ssid->ht40;
 332         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 333                 if (ssid->max_oper_chwidth != DEFAULT_MAX_OPER_CHWIDTH)
 334                         conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 335                 switch (conf->vht_oper_chwidth) {
 336                 case VHT_CHANWIDTH_80MHZ:
 337                 case VHT_CHANWIDTH_80P80MHZ:
 338                         ieee80211_freq_to_chan(
 339                                 frequency,
 340                                 &conf->vht_oper_centr_freq_seg0_idx);
 341                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 342                         break;
 343                 case VHT_CHANWIDTH_160MHZ:
 344                         ieee80211_freq_to_chan(
 345                                 frequency,
 346                                 &conf->vht_oper_centr_freq_seg0_idx);
 347                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 348                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 349                         break;
 350                 }
 351                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 352                                        &conf->vht_oper_centr_freq_seg1_idx);
 353         }
 354
 355         if (ssid->mesh_basic_rates == NULL) {
 356                 /*
 357                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 358                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 359                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 360                  * this is way easier. This also makes our BSSBasicRateSet
 361                  * advertised in beacons match the one in peering frames, sigh.
 362                  */
 363                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 364                         conf->basic_rates = os_memdup(basic_rates_erp,
 365                                                       sizeof(basic_rates_erp));
 366                         if (!conf->basic_rates)
 367                                 goto out_free;
 368                 }
 369         } else {
 370                 rate_len = 0;
 371                 while (1) {
 372                         if (ssid->mesh_basic_rates[rate_len] < 1)
 373                                 break;
 374                         rate_len++;
 375                 }
 376                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 377                 if (conf->basic_rates == NULL)
 378                         goto out_free;
 379                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 380                           rate_len * sizeof(int));
 381                 conf->basic_rates[rate_len] = -1;
 382         }
 383
 384         if (wpa_drv_init_mesh(wpa_s)) {
 385                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 386                 return -1;
 387         }
 388
 389         if (hostapd_setup_interface(ifmsh)) {
 390                 wpa_printf(MSG_ERROR,
 391                            "Failed to initialize hostapd interface for mesh");
 392                 return -1;
 393         }
 394
 395         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 396
 397         return 0;
 398 out_free:
 399         wpa_supplicant_mesh_deinit(wpa_s);
 400         return -ENOMEM;
 401 }
 402
 403
 404 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 405                           const u8 *ies, size_t ie_len)
 406 {
 407         struct ieee802_11_elems elems;
 408
 409         wpa_msg(wpa_s, MSG_INFO,
 410                 "new peer notification for " MACSTR, MAC2STR(addr));
 411
 412         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 413                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 414                         MAC2STR(addr));
 415                 return;
 416         }
 417         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 418 }
 419
 420
 421 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 422                                      struct wpabuf **extra_ie)
 423 {
 424         /* EID + 0-length (wildcard) mesh-id */
 425         size_t ielen = 2;
 426
 427         if (wpabuf_resize(extra_ie, ielen) == 0) {
 428                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 429                 wpabuf_put_u8(*extra_ie, 0);
 430         }
 431 }
 432
 433
 434 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 435                              struct wpa_ssid *ssid)
 436 {
 437         struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
 438         int ret = 0;
 439
 440         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
 441             !params) {
 442                 ret = -ENOENT;
 443                 os_free(params);
 444                 goto out;
 445         }
 446
 447         wpa_supplicant_mesh_deinit(wpa_s);
 448
 449         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 450         wpa_s->group_cipher = WPA_CIPHER_NONE;
 451         wpa_s->mgmt_group_cipher = 0;
 452
 453         params->meshid = ssid->ssid;
 454         params->meshid_len = ssid->ssid_len;
 455         ibss_mesh_setup_freq(wpa_s, ssid, &params->freq);
 456         wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
 457         wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
 458         if (params->freq.ht_enabled && params->freq.sec_channel_offset)
 459                 ssid->ht40 = params->freq.sec_channel_offset;
 460
 461         if (wpa_s->mesh_vht_enabled) {
 462                 ssid->vht = 1;
 463                 ssid->vht_center_freq1 = params->freq.center_freq1;
 464                 switch (params->freq.bandwidth) {
 465                 case 80:
 466                         if (params->freq.center_freq2) {
 467                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
 468                                 ssid->vht_center_freq2 =
 469                                         params->freq.center_freq2;
 470                         } else {
 471                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80MHZ;
 472                         }
 473                         break;
 474                 case 160:
 475                         ssid->max_oper_chwidth = VHT_CHANWIDTH_160MHZ;
 476                         break;
 477                 default:
 478                         ssid->max_oper_chwidth = VHT_CHANWIDTH_USE_HT;
 479                         break;
 480                 }
 481         }
 482         if (ssid->beacon_int > 0)
 483                 params->beacon_int = ssid->beacon_int;
 484         else if (wpa_s->conf->beacon_int > 0)
 485                 params->beacon_int = wpa_s->conf->beacon_int;
 486         if (ssid->dtim_period > 0)
 487                 params->dtim_period = ssid->dtim_period;
 488         else if (wpa_s->conf->dtim_period > 0)
 489                 params->dtim_period = wpa_s->conf->dtim_period;
 490         params->conf.max_peer_links = wpa_s->conf->max_peer_links;
 491         if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
 492                 params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
 493                 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
 494         }
 495
 496         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 497                 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 498                 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 499                 wpa_s->conf->user_mpm = 1;
 500         }
 501
 502         if (wpa_s->conf->user_mpm) {
 503                 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 504                 params->conf.auto_plinks = 0;
 505         } else {
 506                 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 507                 params->conf.auto_plinks = 1;
 508         }
 509         params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 510
 511         os_free(wpa_s->mesh_params);
 512         wpa_s->mesh_params = params;
 513         if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
 514                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 515                 wpa_drv_leave_mesh(wpa_s);
 516                 ret = -1;
 517                 goto out;
 518         }
 519
 520         ret = wpas_mesh_complete(wpa_s);
 521 out:
 522         return ret;
 523 }
 524
 525
 526 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 527 {
 528         int ret = 0;
 529
 530         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 531
 532         /* Need to send peering close messages first */
 533         wpa_supplicant_mesh_deinit(wpa_s);
 534
 535         ret = wpa_drv_leave_mesh(wpa_s);
 536         if (ret)
 537                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 538
 539         wpa_drv_set_operstate(wpa_s, 1);
 540
 541         return ret;
 542 }
 543
 544
 545 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 546 {
 547         struct ieee802_11_elems elems;
 548         char *mesh_id, *pos = buf;
 549         u8 *bss_basic_rate_set;
 550         int bss_basic_rate_set_len, ret, i;
 551
 552         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 553                 return -1;
 554
 555         if (elems.mesh_id_len < 1)
 556                 return 0;
 557
 558         mesh_id = os_malloc(elems.mesh_id_len + 1);
 559         if (mesh_id == NULL)
 560                 return -1;
 561
 562         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 563         mesh_id[elems.mesh_id_len] = '\0';
 564         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 565         os_free(mesh_id);
 566         if (os_snprintf_error(end - pos, ret))
 567                 return pos - buf;
 568         pos += ret;
 569
 570         if (elems.mesh_config_len > 6) {
 571                 ret = os_snprintf(pos, end - pos,
 572                                   "active_path_selection_protocol_id=0x%02x\n"
 573                                   "active_path_selection_metric_id=0x%02x\n"
 574                                   "congestion_control_mode_id=0x%02x\n"
 575                                   "synchronization_method_id=0x%02x\n"
 576                                   "authentication_protocol_id=0x%02x\n"
 577                                   "mesh_formation_info=0x%02x\n"
 578                                   "mesh_capability=0x%02x\n",
 579                                   elems.mesh_config[0], elems.mesh_config[1],
 580                                   elems.mesh_config[2], elems.mesh_config[3],
 581                                   elems.mesh_config[4], elems.mesh_config[5],
 582                                   elems.mesh_config[6]);
 583                 if (os_snprintf_error(end - pos, ret))
 584                         return pos - buf;
 585                 pos += ret;
 586         }
 587
 588         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 589                 elems.ext_supp_rates_len);
 590         if (bss_basic_rate_set == NULL)
 591                 return -1;
 592
 593         bss_basic_rate_set_len = 0;
 594         for (i = 0; i < elems.supp_rates_len; i++) {
 595                 if (elems.supp_rates[i] & 0x80) {
 596                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 597                                 (elems.supp_rates[i] & 0x7f) * 5;
 598                 }
 599         }
 600         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 601                 if (elems.ext_supp_rates[i] & 0x80) {
 602                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 603                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 604                 }
 605         }
 606         if (bss_basic_rate_set_len > 0) {
 607                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 608                                   bss_basic_rate_set[0]);
 609                 if (os_snprintf_error(end - pos, ret))
 610                         goto fail;
 611                 pos += ret;
 612
 613                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 614                         ret = os_snprintf(pos, end - pos, " %d",
 615                                           bss_basic_rate_set[i]);
 616                         if (os_snprintf_error(end - pos, ret))
 617                                 goto fail;
 618                         pos += ret;
 619                 }
 620
 621                 ret = os_snprintf(pos, end - pos, "\n");
 622                 if (os_snprintf_error(end - pos, ret))
 623                         goto fail;
 624                 pos += ret;
 625         }
 626 fail:
 627         os_free(bss_basic_rate_set);
 628
 629         return pos - buf;
 630 }
 631
 632
 633 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 634                                char *end)
 635 {
 636         return mesh_attr_text(ies, ies_len, buf, end);
 637 }
 638
 639
 640 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 641                                 size_t len)
 642 {
 643         char *ifname_ptr = wpa_s->ifname;
 644         int res;
 645
 646         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 647                           wpa_s->mesh_if_idx);
 648         if (os_snprintf_error(len, res) ||
 649             (os_strlen(ifname) >= IFNAMSIZ &&
 650              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 651                 /* Try to avoid going over the IFNAMSIZ length limit */
 652                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 653                 if (os_snprintf_error(len, res))
 654                         return -1;
 655         }
 656         wpa_s->mesh_if_idx++;
 657         return 0;
 658 }
 659
 660
 661 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 662                             size_t len)
 663 {
 664         struct wpa_interface iface;
 665         struct wpa_supplicant *mesh_wpa_s;
 666         u8 addr[ETH_ALEN];
 667
 668         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 669                 return -1;
 670
 671         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 672                            NULL) < 0) {
 673                 wpa_printf(MSG_ERROR,
 674                            "mesh: Failed to create new mesh interface");
 675                 return -1;
 676         }
 677         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 678                    MACSTR, ifname, MAC2STR(addr));
 679
 680         os_memset(&iface, 0, sizeof(iface));
 681         iface.ifname = ifname;
 682         iface.driver = wpa_s->driver->name;
 683         iface.driver_param = wpa_s->conf->driver_param;
 684         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 685
 686         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 687         if (!mesh_wpa_s) {
 688                 wpa_printf(MSG_ERROR,
 689                            "mesh: Failed to create new wpa_supplicant interface");
 690                 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
 691                 return -1;
 692         }
 693         mesh_wpa_s->mesh_if_created = 1;
 694         return 0;
 695 }
 696
 697
 698 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 699 {
 700         return mesh_mpm_close_peer(wpa_s, addr);
 701 }
 702
 703
 704 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
 705                        int duration)
 706 {
 707         return mesh_mpm_connect_peer(wpa_s, addr, duration);
 708 }