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         /* 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         const char *password;
 161         size_t len;
 162         int rate_len;
 163         int frequency;
 164
 165         if (!wpa_s->conf->user_mpm) {
 166                 /* not much for us to do here */
 167                 wpa_msg(wpa_s, MSG_WARNING,
 168                         "user_mpm is not enabled in configuration");
 169                 return 0;
 170         }
 171
 172         wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
 173         if (!ifmsh)
 174                 return -ENOMEM;
 175
 176         ifmsh->drv_flags = wpa_s->drv_flags;
 177         ifmsh->num_bss = 1;
 178         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 179                                sizeof(struct hostapd_data *));
 180         if (!ifmsh->bss)
 181                 goto out_free;
 182
 183         ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
 184         if (!bss)
 185                 goto out_free;
 186
 187         ifmsh->bss[0]->msg_ctx = wpa_s;
 188         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 189         bss->driver = wpa_s->driver;
 190         bss->drv_priv = wpa_s->drv_priv;
 191         bss->iface = ifmsh;
 192         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 193         frequency = ssid->frequency;
 194         if (frequency != freq->freq &&
 195             frequency == freq->freq + freq->sec_channel_offset * 20) {
 196                 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
 197                 frequency = freq->freq;
 198         }
 199         wpa_s->assoc_freq = frequency;
 200         wpa_s->current_ssid = ssid;
 201
 202         /* setup an AP config for auth processing */
 203         conf = hostapd_config_defaults();
 204         if (!conf)
 205                 goto out_free;
 206
 207         bss->conf = *conf->bss;
 208         bss->conf->start_disabled = 1;
 209         bss->conf->mesh = MESH_ENABLED;
 210         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 211         bss->iconf = conf;
 212         ifmsh->conf = conf;
 213
 214         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 215         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 216                 wpa_s->conf->dot11RSNASAERetransPeriod;
 217         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 218
 219         mconf = mesh_config_create(wpa_s, ssid);
 220         if (!mconf)
 221                 goto out_free;
 222         ifmsh->mconf = mconf;
 223
 224         /* need conf->hw_mode for supported rates. */
 225         conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
 226         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 227                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 228                            frequency);
 229                 goto out_free;
 230         }
 231         if (ssid->ht40)
 232                 conf->secondary_channel = ssid->ht40;
 233         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 234                 conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 235                 switch (conf->vht_oper_chwidth) {
 236                 case VHT_CHANWIDTH_80MHZ:
 237                 case VHT_CHANWIDTH_80P80MHZ:
 238                         ieee80211_freq_to_chan(
 239                                 frequency,
 240                                 &conf->vht_oper_centr_freq_seg0_idx);
 241                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 242                         break;
 243                 case VHT_CHANWIDTH_160MHZ:
 244                         ieee80211_freq_to_chan(
 245                                 frequency,
 246                                 &conf->vht_oper_centr_freq_seg0_idx);
 247                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 248                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 249                         break;
 250                 }
 251                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 252                                        &conf->vht_oper_centr_freq_seg1_idx);
 253         }
 254
 255         if (ssid->mesh_basic_rates == NULL) {
 256                 /*
 257                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 258                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 259                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 260                  * this is way easier. This also makes our BSSBasicRateSet
 261                  * advertised in beacons match the one in peering frames, sigh.
 262                  */
 263                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 264                         conf->basic_rates = os_memdup(basic_rates_erp,
 265                                                       sizeof(basic_rates_erp));
 266                         if (!conf->basic_rates)
 267                                 goto out_free;
 268                 }
 269         } else {
 270                 rate_len = 0;
 271                 while (1) {
 272                         if (ssid->mesh_basic_rates[rate_len] < 1)
 273                                 break;
 274                         rate_len++;
 275                 }
 276                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 277                 if (conf->basic_rates == NULL)
 278                         goto out_free;
 279                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 280                           rate_len * sizeof(int));
 281                 conf->basic_rates[rate_len] = -1;
 282         }
 283
 284         if (hostapd_setup_interface(ifmsh)) {
 285                 wpa_printf(MSG_ERROR,
 286                            "Failed to initialize hostapd interface for mesh");
 287                 return -1;
 288         }
 289
 290         if (wpa_drv_init_mesh(wpa_s)) {
 291                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 292                 return -1;
 293         }
 294
 295         if (mconf->security != MESH_CONF_SEC_NONE) {
 296                 password = ssid->sae_password;
 297                 if (!password)
 298                         password = ssid->passphrase;
 299                 if (!password) {
 300                         wpa_printf(MSG_ERROR,
 301                                    "mesh: Passphrase for SAE not configured");
 302                         goto out_free;
 303                 }
 304
 305                 bss->conf->wpa = ssid->proto;
 306                 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
 307
 308                 if (wpa_s->conf->sae_groups &&
 309                     wpa_s->conf->sae_groups[0] > 0) {
 310                         wpas_mesh_copy_groups(bss, wpa_s);
 311                 } else {
 312                         bss->conf->sae_groups =
 313                                 os_memdup(default_groups,
 314                                           sizeof(default_groups));
 315                         if (!bss->conf->sae_groups)
 316                                 goto out_free;
 317                 }
 318
 319                 len = os_strlen(password);
 320                 bss->conf->ssid.wpa_passphrase =
 321                         dup_binstr(password, len);
 322
 323                 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
 324                 if (!wpa_s->mesh_rsn)
 325                         goto out_free;
 326         }
 327
 328         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 329
 330         return 0;
 331 out_free:
 332         wpa_supplicant_mesh_deinit(wpa_s);
 333         return -ENOMEM;
 334 }
 335
 336
 337 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 338                           const u8 *ies, size_t ie_len)
 339 {
 340         struct ieee802_11_elems elems;
 341
 342         wpa_msg(wpa_s, MSG_INFO,
 343                 "new peer notification for " MACSTR, MAC2STR(addr));
 344
 345         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 346                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 347                         MAC2STR(addr));
 348                 return;
 349         }
 350         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 351 }
 352
 353
 354 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 355                                      struct wpabuf **extra_ie)
 356 {
 357         /* EID + 0-length (wildcard) mesh-id */
 358         size_t ielen = 2;
 359
 360         if (wpabuf_resize(extra_ie, ielen) == 0) {
 361                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 362                 wpabuf_put_u8(*extra_ie, 0);
 363         }
 364 }
 365
 366
 367 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 368                              struct wpa_ssid *ssid)
 369 {
 370         struct wpa_driver_mesh_join_params params;
 371         int ret = 0;
 372
 373         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
 374                 ret = -ENOENT;
 375                 goto out;
 376         }
 377
 378         wpa_supplicant_mesh_deinit(wpa_s);
 379
 380         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 381         wpa_s->group_cipher = WPA_CIPHER_NONE;
 382         wpa_s->mgmt_group_cipher = 0;
 383
 384         os_memset(&params, 0, sizeof(params));
 385         params.meshid = ssid->ssid;
 386         params.meshid_len = ssid->ssid_len;
 387         ibss_mesh_setup_freq(wpa_s, ssid, &params.freq);
 388         wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
 389         wpa_s->mesh_vht_enabled = !!params.freq.vht_enabled;
 390         if (params.freq.ht_enabled && params.freq.sec_channel_offset)
 391                 ssid->ht40 = params.freq.sec_channel_offset;
 392         if (wpa_s->mesh_vht_enabled) {
 393                 ssid->vht = 1;
 394                 switch (params.freq.bandwidth) {
 395                 case 80:
 396                         if (params.freq.center_freq2) {
 397                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
 398                                 ssid->vht_center_freq2 =
 399                                         params.freq.center_freq2;
 400                         } else {
 401                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80MHZ;
 402                         }
 403                         break;
 404                 case 160:
 405                         ssid->max_oper_chwidth = VHT_CHANWIDTH_160MHZ;
 406                         break;
 407                 default:
 408                         ssid->max_oper_chwidth = VHT_CHANWIDTH_USE_HT;
 409                         break;
 410                 }
 411         }
 412         if (ssid->beacon_int > 0)
 413                 params.beacon_int = ssid->beacon_int;
 414         else if (wpa_s->conf->beacon_int > 0)
 415                 params.beacon_int = wpa_s->conf->beacon_int;
 416         if (ssid->dtim_period > 0)
 417                 params.dtim_period = ssid->dtim_period;
 418         else if (wpa_s->conf->dtim_period > 0)
 419                 params.dtim_period = wpa_s->conf->dtim_period;
 420         params.conf.max_peer_links = wpa_s->conf->max_peer_links;
 421         if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
 422                 params.conf.rssi_threshold = ssid->mesh_rssi_threshold;
 423                 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
 424         }
 425
 426         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 427                 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 428                 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 429                 wpa_s->conf->user_mpm = 1;
 430         }
 431
 432         if (wpa_s->conf->user_mpm) {
 433                 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 434                 params.conf.auto_plinks = 0;
 435         } else {
 436                 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 437                 params.conf.auto_plinks = 1;
 438         }
 439         params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 440
 441         if (wpa_supplicant_mesh_init(wpa_s, ssid, &params.freq)) {
 442                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 443                 wpa_drv_leave_mesh(wpa_s);
 444                 ret = -1;
 445                 goto out;
 446         }
 447
 448         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 449                 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
 450                 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
 451                 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
 452         }
 453
 454         if (wpa_s->ifmsh) {
 455                 params.ies = wpa_s->ifmsh->mconf->rsn_ie;
 456                 params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len;
 457                 params.basic_rates = wpa_s->ifmsh->basic_rates;
 458                 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
 459                 params.conf.ht_opmode = wpa_s->ifmsh->bss[0]->iface->ht_op_mode;
 460         }
 461
 462         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 463                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 464         ret = wpa_drv_join_mesh(wpa_s, &params);
 465         if (ret)
 466                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
 467
 468         /* hostapd sets the interface down until we associate */
 469         wpa_drv_set_operstate(wpa_s, 1);
 470
 471         if (!ret)
 472                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 473
 474 out:
 475         return ret;
 476 }
 477
 478
 479 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 480 {
 481         int ret = 0;
 482
 483         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 484
 485         /* Need to send peering close messages first */
 486         wpa_supplicant_mesh_deinit(wpa_s);
 487
 488         ret = wpa_drv_leave_mesh(wpa_s);
 489         if (ret)
 490                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 491
 492         wpa_drv_set_operstate(wpa_s, 1);
 493
 494         return ret;
 495 }
 496
 497
 498 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 499 {
 500         struct ieee802_11_elems elems;
 501         char *mesh_id, *pos = buf;
 502         u8 *bss_basic_rate_set;
 503         int bss_basic_rate_set_len, ret, i;
 504
 505         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 506                 return -1;
 507
 508         if (elems.mesh_id_len < 1)
 509                 return 0;
 510
 511         mesh_id = os_malloc(elems.mesh_id_len + 1);
 512         if (mesh_id == NULL)
 513                 return -1;
 514
 515         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 516         mesh_id[elems.mesh_id_len] = '\0';
 517         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 518         os_free(mesh_id);
 519         if (os_snprintf_error(end - pos, ret))
 520                 return pos - buf;
 521         pos += ret;
 522
 523         if (elems.mesh_config_len > 6) {
 524                 ret = os_snprintf(pos, end - pos,
 525                                   "active_path_selection_protocol_id=0x%02x\n"
 526                                   "active_path_selection_metric_id=0x%02x\n"
 527                                   "congestion_control_mode_id=0x%02x\n"
 528                                   "synchronization_method_id=0x%02x\n"
 529                                   "authentication_protocol_id=0x%02x\n"
 530                                   "mesh_formation_info=0x%02x\n"
 531                                   "mesh_capability=0x%02x\n",
 532                                   elems.mesh_config[0], elems.mesh_config[1],
 533                                   elems.mesh_config[2], elems.mesh_config[3],
 534                                   elems.mesh_config[4], elems.mesh_config[5],
 535                                   elems.mesh_config[6]);
 536                 if (os_snprintf_error(end - pos, ret))
 537                         return pos - buf;
 538                 pos += ret;
 539         }
 540
 541         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 542                 elems.ext_supp_rates_len);
 543         if (bss_basic_rate_set == NULL)
 544                 return -1;
 545
 546         bss_basic_rate_set_len = 0;
 547         for (i = 0; i < elems.supp_rates_len; i++) {
 548                 if (elems.supp_rates[i] & 0x80) {
 549                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 550                                 (elems.supp_rates[i] & 0x7f) * 5;
 551                 }
 552         }
 553         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 554                 if (elems.ext_supp_rates[i] & 0x80) {
 555                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 556                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 557                 }
 558         }
 559         if (bss_basic_rate_set_len > 0) {
 560                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 561                                   bss_basic_rate_set[0]);
 562                 if (os_snprintf_error(end - pos, ret))
 563                         goto fail;
 564                 pos += ret;
 565
 566                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 567                         ret = os_snprintf(pos, end - pos, " %d",
 568                                           bss_basic_rate_set[i]);
 569                         if (os_snprintf_error(end - pos, ret))
 570                                 goto fail;
 571                         pos += ret;
 572                 }
 573
 574                 ret = os_snprintf(pos, end - pos, "\n");
 575                 if (os_snprintf_error(end - pos, ret))
 576                         goto fail;
 577                 pos += ret;
 578         }
 579 fail:
 580         os_free(bss_basic_rate_set);
 581
 582         return pos - buf;
 583 }
 584
 585
 586 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 587                                char *end)
 588 {
 589         return mesh_attr_text(ies, ies_len, buf, end);
 590 }
 591
 592
 593 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 594                                 size_t len)
 595 {
 596         char *ifname_ptr = wpa_s->ifname;
 597         int res;
 598
 599         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 600                           wpa_s->mesh_if_idx);
 601         if (os_snprintf_error(len, res) ||
 602             (os_strlen(ifname) >= IFNAMSIZ &&
 603              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 604                 /* Try to avoid going over the IFNAMSIZ length limit */
 605                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 606                 if (os_snprintf_error(len, res))
 607                         return -1;
 608         }
 609         wpa_s->mesh_if_idx++;
 610         return 0;
 611 }
 612
 613
 614 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 615                             size_t len)
 616 {
 617         struct wpa_interface iface;
 618         struct wpa_supplicant *mesh_wpa_s;
 619         u8 addr[ETH_ALEN];
 620
 621         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 622                 return -1;
 623
 624         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 625                            NULL) < 0) {
 626                 wpa_printf(MSG_ERROR,
 627                            "mesh: Failed to create new mesh interface");
 628                 return -1;
 629         }
 630         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 631                    MACSTR, ifname, MAC2STR(addr));
 632
 633         os_memset(&iface, 0, sizeof(iface));
 634         iface.ifname = ifname;
 635         iface.driver = wpa_s->driver->name;
 636         iface.driver_param = wpa_s->conf->driver_param;
 637         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 638
 639         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 640         if (!mesh_wpa_s) {
 641                 wpa_printf(MSG_ERROR,
 642                            "mesh: Failed to create new wpa_supplicant interface");
 643                 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
 644                 return -1;
 645         }
 646         mesh_wpa_s->mesh_if_created = 1;
 647         return 0;
 648 }
 649
 650
 651 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 652 {
 653         return mesh_mpm_close_peer(wpa_s, addr);
 654 }
 655
 656
 657 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
 658                        int duration)
 659 {
 660         return mesh_mpm_connect_peer(wpa_s, addr, duration);
 661 }