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         conf->ieee80211w = ssid->ieee80211w;
  90         if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
  91                 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
  92                         conf->ieee80211w = wpa_s->conf->pmf;
  93                 else
  94                         conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
  95         }
  96 #ifdef CONFIG_OCV
  97         conf->ocv = ssid->ocv;
  98 #endif /* CONFIG_OCV */
  99
 100         cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
 101         if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
 102                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
 103                 os_free(conf);
 104                 return NULL;
 105         }
 106         conf->pairwise_cipher = cipher;
 107
 108         cipher = wpa_pick_group_cipher(ssid->group_cipher);
 109         if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
 110             cipher == WPA_CIPHER_GTK_NOT_USED) {
 111                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
 112                 os_free(conf);
 113                 return NULL;
 114         }
 115
 116         conf->group_cipher = cipher;
 117         if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION)
 118                 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
 119
 120         /* defaults */
 121         conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
 122         conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
 123         conf->mesh_cc_id = 0;
 124         conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
 125         conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
 126         conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
 127         conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
 128         conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
 129         conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
 130
 131         return conf;
 132 }
 133
 134
 135 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
 136                                   struct wpa_supplicant *wpa_s)
 137 {
 138         int num_groups;
 139         size_t groups_size;
 140
 141         for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
 142              num_groups++)
 143                 ;
 144
 145         groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
 146         bss->conf->sae_groups = os_malloc(groups_size);
 147         if (bss->conf->sae_groups)
 148                 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
 149                           groups_size);
 150 }
 151
 152
 153 static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
 154 {
 155         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 156         struct wpa_ssid *ssid = wpa_s->current_ssid;
 157         struct hostapd_data *bss = ifmsh->bss[0];
 158         static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
 159         const char *password;
 160         size_t len;
 161
 162         password = ssid->sae_password;
 163         if (!password)
 164                 password = ssid->passphrase;
 165         if (!password) {
 166                 wpa_printf(MSG_ERROR,
 167                            "mesh: Passphrase for SAE not configured");
 168                 return -1;
 169         }
 170
 171         bss->conf->wpa = ssid->proto;
 172         bss->conf->wpa_key_mgmt = ssid->key_mgmt;
 173
 174         if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) {
 175                 wpas_mesh_copy_groups(bss, wpa_s);
 176         } else {
 177                 bss->conf->sae_groups = os_memdup(default_groups,
 178                                                   sizeof(default_groups));
 179                 if (!bss->conf->sae_groups)
 180                         return -1;
 181         }
 182
 183         len = os_strlen(password);
 184         bss->conf->ssid.wpa_passphrase = dup_binstr(password, len);
 185
 186         wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf);
 187         return !wpa_s->mesh_rsn ? -1 : 0;
 188 }
 189
 190
 191 static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
 192 {
 193         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 194         struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
 195         struct wpa_ssid *ssid = wpa_s->current_ssid;
 196         int ret;
 197
 198         if (!params || !ssid || !ifmsh) {
 199                 wpa_printf(MSG_ERROR, "mesh: %s called without active mesh",
 200                            __func__);
 201                 return -1;
 202         }
 203
 204         if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
 205             wpas_mesh_init_rsn(wpa_s)) {
 206                 wpa_printf(MSG_ERROR,
 207                            "mesh: RSN initialization failed - deinit mesh");
 208                 wpa_supplicant_mesh_deinit(wpa_s);
 209                 wpa_drv_leave_mesh(wpa_s);
 210                 return -1;
 211         }
 212
 213         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 214                 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
 215                 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
 216                 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
 217         }
 218
 219         params->ies = ifmsh->mconf->rsn_ie;
 220         params->ie_len = ifmsh->mconf->rsn_ie_len;
 221         params->basic_rates = ifmsh->basic_rates;
 222         params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
 223         params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode;
 224
 225         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 226                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 227         ret = wpa_drv_join_mesh(wpa_s, params);
 228         if (ret)
 229                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
 230
 231         /* hostapd sets the interface down until we associate */
 232         wpa_drv_set_operstate(wpa_s, 1);
 233
 234         if (!ret)
 235                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 236
 237         return ret;
 238 }
 239
 240
 241 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
 242                                     struct wpa_ssid *ssid,
 243                                     struct hostapd_freq_params *freq)
 244 {
 245         struct hostapd_iface *ifmsh;
 246         struct hostapd_data *bss;
 247         struct hostapd_config *conf;
 248         struct mesh_conf *mconf;
 249         int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
 250         int rate_len;
 251         int frequency;
 252
 253         if (!wpa_s->conf->user_mpm) {
 254                 /* not much for us to do here */
 255                 wpa_msg(wpa_s, MSG_WARNING,
 256                         "user_mpm is not enabled in configuration");
 257                 return 0;
 258         }
 259
 260         wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
 261         if (!ifmsh)
 262                 return -ENOMEM;
 263
 264         ifmsh->drv_flags = wpa_s->drv_flags;
 265         ifmsh->num_bss = 1;
 266         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 267                                sizeof(struct hostapd_data *));
 268         if (!ifmsh->bss)
 269                 goto out_free;
 270
 271         ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
 272         if (!bss)
 273                 goto out_free;
 274
 275         ifmsh->bss[0]->msg_ctx = wpa_s;
 276         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 277         bss->driver = wpa_s->driver;
 278         bss->drv_priv = wpa_s->drv_priv;
 279         bss->iface = ifmsh;
 280         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 281         frequency = ssid->frequency;
 282         if (frequency != freq->freq &&
 283             frequency == freq->freq + freq->sec_channel_offset * 20) {
 284                 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
 285                 frequency = freq->freq;
 286         }
 287         wpa_s->assoc_freq = frequency;
 288         wpa_s->current_ssid = ssid;
 289
 290         /* setup an AP config for auth processing */
 291         conf = hostapd_config_defaults();
 292         if (!conf)
 293                 goto out_free;
 294
 295         bss->conf = *conf->bss;
 296         bss->conf->start_disabled = 1;
 297         bss->conf->mesh = MESH_ENABLED;
 298         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 299
 300         if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
 301                              wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
 302                 conf->ieee80211h = 1;
 303                 conf->ieee80211d = 1;
 304                 conf->country[0] = wpa_s->conf->country[0];
 305                 conf->country[1] = wpa_s->conf->country[1];
 306                 conf->country[2] = ' ';
 307         }
 308
 309         bss->iconf = conf;
 310         ifmsh->conf = conf;
 311
 312         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 313         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 314                 wpa_s->conf->dot11RSNASAERetransPeriod;
 315         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 316
 317         mconf = mesh_config_create(wpa_s, ssid);
 318         if (!mconf)
 319                 goto out_free;
 320         ifmsh->mconf = mconf;
 321
 322         /* need conf->hw_mode for supported rates. */
 323         conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
 324         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 325                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 326                            frequency);
 327                 goto out_free;
 328         }
 329         if (ssid->ht40)
 330                 conf->secondary_channel = ssid->ht40;
 331         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 332                 if (ssid->max_oper_chwidth != DEFAULT_MAX_OPER_CHWIDTH)
 333                         conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 334                 switch (conf->vht_oper_chwidth) {
 335                 case CHANWIDTH_80MHZ:
 336                 case CHANWIDTH_80P80MHZ:
 337                         ieee80211_freq_to_chan(
 338                                 frequency,
 339                                 &conf->vht_oper_centr_freq_seg0_idx);
 340                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 341                         break;
 342                 case CHANWIDTH_160MHZ:
 343                         ieee80211_freq_to_chan(
 344                                 frequency,
 345                                 &conf->vht_oper_centr_freq_seg0_idx);
 346                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 347                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 348                         break;
 349                 }
 350                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 351                                        &conf->vht_oper_centr_freq_seg1_idx);
 352         }
 353
 354         if (ssid->mesh_basic_rates == NULL) {
 355                 /*
 356                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 357                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 358                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 359                  * this is way easier. This also makes our BSSBasicRateSet
 360                  * advertised in beacons match the one in peering frames, sigh.
 361                  */
 362                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 363                         conf->basic_rates = os_memdup(basic_rates_erp,
 364                                                       sizeof(basic_rates_erp));
 365                         if (!conf->basic_rates)
 366                                 goto out_free;
 367                 }
 368         } else {
 369                 rate_len = 0;
 370                 while (1) {
 371                         if (ssid->mesh_basic_rates[rate_len] < 1)
 372                                 break;
 373                         rate_len++;
 374                 }
 375                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 376                 if (conf->basic_rates == NULL)
 377                         goto out_free;
 378                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 379                           rate_len * sizeof(int));
 380                 conf->basic_rates[rate_len] = -1;
 381         }
 382
 383         if (wpa_drv_init_mesh(wpa_s)) {
 384                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 385                 return -1;
 386         }
 387
 388         if (hostapd_setup_interface(ifmsh)) {
 389                 wpa_printf(MSG_ERROR,
 390                            "Failed to initialize hostapd interface for mesh");
 391                 return -1;
 392         }
 393
 394         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 395
 396         return 0;
 397 out_free:
 398         wpa_supplicant_mesh_deinit(wpa_s);
 399         return -ENOMEM;
 400 }
 401
 402
 403 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 404                           const u8 *ies, size_t ie_len)
 405 {
 406         struct ieee802_11_elems elems;
 407
 408         wpa_msg(wpa_s, MSG_INFO,
 409                 "new peer notification for " MACSTR, MAC2STR(addr));
 410
 411         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 412                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 413                         MAC2STR(addr));
 414                 return;
 415         }
 416         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 417 }
 418
 419
 420 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 421                                      struct wpabuf **extra_ie)
 422 {
 423         /* EID + 0-length (wildcard) mesh-id */
 424         size_t ielen = 2;
 425
 426         if (wpabuf_resize(extra_ie, ielen) == 0) {
 427                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 428                 wpabuf_put_u8(*extra_ie, 0);
 429         }
 430 }
 431
 432
 433 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 434                              struct wpa_ssid *ssid)
 435 {
 436         struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
 437         int ret = 0;
 438
 439         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
 440             !params) {
 441                 ret = -ENOENT;
 442                 os_free(params);
 443                 goto out;
 444         }
 445
 446         wpa_supplicant_mesh_deinit(wpa_s);
 447
 448         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 449         wpa_s->group_cipher = WPA_CIPHER_NONE;
 450         wpa_s->mgmt_group_cipher = 0;
 451
 452         params->meshid = ssid->ssid;
 453         params->meshid_len = ssid->ssid_len;
 454         ibss_mesh_setup_freq(wpa_s, ssid, &params->freq);
 455         wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
 456         wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
 457         wpa_s->mesh_he_enabled = !!params->freq.he_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 = CHANWIDTH_80P80MHZ;
 468                                 ssid->vht_center_freq2 =
 469                                         params->freq.center_freq2;
 470                         } else {
 471                                 ssid->max_oper_chwidth = CHANWIDTH_80MHZ;
 472                         }
 473                         break;
 474                 case 160:
 475                         ssid->max_oper_chwidth = CHANWIDTH_160MHZ;
 476                         break;
 477                 default:
 478                         ssid->max_oper_chwidth = CHANWIDTH_USE_HT;
 479                         break;
 480                 }
 481         }
 482         if (wpa_s->mesh_he_enabled)
 483                 ssid->he = 1;
 484         if (ssid->beacon_int > 0)
 485                 params->beacon_int = ssid->beacon_int;
 486         else if (wpa_s->conf->beacon_int > 0)
 487                 params->beacon_int = wpa_s->conf->beacon_int;
 488         if (ssid->dtim_period > 0)
 489                 params->dtim_period = ssid->dtim_period;
 490         else if (wpa_s->conf->dtim_period > 0)
 491                 params->dtim_period = wpa_s->conf->dtim_period;
 492         params->conf.max_peer_links = wpa_s->conf->max_peer_links;
 493         if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
 494                 params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
 495                 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
 496         }
 497
 498         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 499                 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 500                 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 501                 wpa_s->conf->user_mpm = 1;
 502         }
 503
 504         if (wpa_s->conf->user_mpm) {
 505                 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 506                 params->conf.auto_plinks = 0;
 507         } else {
 508                 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 509                 params->conf.auto_plinks = 1;
 510         }
 511         params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 512
 513         os_free(wpa_s->mesh_params);
 514         wpa_s->mesh_params = params;
 515         if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
 516                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 517                 wpa_drv_leave_mesh(wpa_s);
 518                 ret = -1;
 519                 goto out;
 520         }
 521
 522         ret = wpas_mesh_complete(wpa_s);
 523 out:
 524         return ret;
 525 }
 526
 527
 528 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 529 {
 530         int ret = 0;
 531
 532         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 533
 534         /* Need to send peering close messages first */
 535         wpa_supplicant_mesh_deinit(wpa_s);
 536
 537         ret = wpa_drv_leave_mesh(wpa_s);
 538         if (ret)
 539                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 540
 541         wpa_drv_set_operstate(wpa_s, 1);
 542
 543         return ret;
 544 }
 545
 546
 547 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 548 {
 549         struct ieee802_11_elems elems;
 550         char *mesh_id, *pos = buf;
 551         u8 *bss_basic_rate_set;
 552         int bss_basic_rate_set_len, ret, i;
 553
 554         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 555                 return -1;
 556
 557         if (elems.mesh_id_len < 1)
 558                 return 0;
 559
 560         mesh_id = os_malloc(elems.mesh_id_len + 1);
 561         if (mesh_id == NULL)
 562                 return -1;
 563
 564         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 565         mesh_id[elems.mesh_id_len] = '\0';
 566         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 567         os_free(mesh_id);
 568         if (os_snprintf_error(end - pos, ret))
 569                 return pos - buf;
 570         pos += ret;
 571
 572         if (elems.mesh_config_len > 6) {
 573                 ret = os_snprintf(pos, end - pos,
 574                                   "active_path_selection_protocol_id=0x%02x\n"
 575                                   "active_path_selection_metric_id=0x%02x\n"
 576                                   "congestion_control_mode_id=0x%02x\n"
 577                                   "synchronization_method_id=0x%02x\n"
 578                                   "authentication_protocol_id=0x%02x\n"
 579                                   "mesh_formation_info=0x%02x\n"
 580                                   "mesh_capability=0x%02x\n",
 581                                   elems.mesh_config[0], elems.mesh_config[1],
 582                                   elems.mesh_config[2], elems.mesh_config[3],
 583                                   elems.mesh_config[4], elems.mesh_config[5],
 584                                   elems.mesh_config[6]);
 585                 if (os_snprintf_error(end - pos, ret))
 586                         return pos - buf;
 587                 pos += ret;
 588         }
 589
 590         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 591                 elems.ext_supp_rates_len);
 592         if (bss_basic_rate_set == NULL)
 593                 return -1;
 594
 595         bss_basic_rate_set_len = 0;
 596         for (i = 0; i < elems.supp_rates_len; i++) {
 597                 if (elems.supp_rates[i] & 0x80) {
 598                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 599                                 (elems.supp_rates[i] & 0x7f) * 5;
 600                 }
 601         }
 602         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 603                 if (elems.ext_supp_rates[i] & 0x80) {
 604                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 605                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 606                 }
 607         }
 608         if (bss_basic_rate_set_len > 0) {
 609                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 610                                   bss_basic_rate_set[0]);
 611                 if (os_snprintf_error(end - pos, ret))
 612                         goto fail;
 613                 pos += ret;
 614
 615                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 616                         ret = os_snprintf(pos, end - pos, " %d",
 617                                           bss_basic_rate_set[i]);
 618                         if (os_snprintf_error(end - pos, ret))
 619                                 goto fail;
 620                         pos += ret;
 621                 }
 622
 623                 ret = os_snprintf(pos, end - pos, "\n");
 624                 if (os_snprintf_error(end - pos, ret))
 625                         goto fail;
 626                 pos += ret;
 627         }
 628 fail:
 629         os_free(bss_basic_rate_set);
 630
 631         return pos - buf;
 632 }
 633
 634
 635 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 636                                char *end)
 637 {
 638         return mesh_attr_text(ies, ies_len, buf, end);
 639 }
 640
 641
 642 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 643                                 size_t len)
 644 {
 645         char *ifname_ptr = wpa_s->ifname;
 646         int res;
 647
 648         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 649                           wpa_s->mesh_if_idx);
 650         if (os_snprintf_error(len, res) ||
 651             (os_strlen(ifname) >= IFNAMSIZ &&
 652              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 653                 /* Try to avoid going over the IFNAMSIZ length limit */
 654                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 655                 if (os_snprintf_error(len, res))
 656                         return -1;
 657         }
 658         wpa_s->mesh_if_idx++;
 659         return 0;
 660 }
 661
 662
 663 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 664                             size_t len)
 665 {
 666         struct wpa_interface iface;
 667         struct wpa_supplicant *mesh_wpa_s;
 668         u8 addr[ETH_ALEN];
 669
 670         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 671                 return -1;
 672
 673         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 674                            NULL) < 0) {
 675                 wpa_printf(MSG_ERROR,
 676                            "mesh: Failed to create new mesh interface");
 677                 return -1;
 678         }
 679         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 680                    MACSTR, ifname, MAC2STR(addr));
 681
 682         os_memset(&iface, 0, sizeof(iface));
 683         iface.ifname = ifname;
 684         iface.driver = wpa_s->driver->name;
 685         iface.driver_param = wpa_s->conf->driver_param;
 686         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 687
 688         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 689         if (!mesh_wpa_s) {
 690                 wpa_printf(MSG_ERROR,
 691                            "mesh: Failed to create new wpa_supplicant interface");
 692                 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
 693                 return -1;
 694         }
 695         mesh_wpa_s->mesh_if_created = 1;
 696         return 0;
 697 }
 698
 699
 700 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 701 {
 702         return mesh_mpm_close_peer(wpa_s, addr);
 703 }
 704
 705
 706 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
 707                        int duration)
 708 {
 709         return mesh_mpm_connect_peer(wpa_s, addr, duration);
 710 }