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_ssid *ssid)
  70 {
  71         struct mesh_conf *conf;
  72
  73         conf = os_zalloc(sizeof(struct mesh_conf));
  74         if (!conf)
  75                 return NULL;
  76
  77         os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
  78         conf->meshid_len = ssid->ssid_len;
  79
  80         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
  81                 conf->security |= MESH_CONF_SEC_AUTH |
  82                         MESH_CONF_SEC_AMPE;
  83         else
  84                 conf->security |= MESH_CONF_SEC_NONE;
  85
  86         /* defaults */
  87         conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
  88         conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
  89         conf->mesh_cc_id = 0;
  90         conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
  91         conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
  92         conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
  93         conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
  94         conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
  95         conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
  96
  97         return conf;
  98 }
  99
 100
 101 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
 102                                   struct wpa_supplicant *wpa_s)
 103 {
 104         int num_groups;
 105         size_t groups_size;
 106
 107         for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
 108              num_groups++)
 109                 ;
 110
 111         groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
 112         bss->conf->sae_groups = os_malloc(groups_size);
 113         if (bss->conf->sae_groups)
 114                 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
 115                           groups_size);
 116 }
 117
 118
 119 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
 120                                     struct wpa_ssid *ssid)
 121 {
 122         struct hostapd_iface *ifmsh;
 123         struct hostapd_data *bss;
 124         struct hostapd_config *conf;
 125         struct mesh_conf *mconf;
 126         int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
 127         static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
 128         size_t len;
 129         int rate_len;
 130
 131         if (!wpa_s->conf->user_mpm) {
 132                 /* not much for us to do here */
 133                 wpa_msg(wpa_s, MSG_WARNING,
 134                         "user_mpm is not enabled in configuration");
 135                 return 0;
 136         }
 137
 138         wpa_s->ifmsh = ifmsh = os_zalloc(sizeof(*wpa_s->ifmsh));
 139         if (!ifmsh)
 140                 return -ENOMEM;
 141
 142         ifmsh->drv_flags = wpa_s->drv_flags;
 143         ifmsh->num_bss = 1;
 144         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 145                                sizeof(struct hostapd_data *));
 146         if (!ifmsh->bss)
 147                 goto out_free;
 148
 149         ifmsh->bss[0] = bss = os_zalloc(sizeof(struct hostapd_data));
 150         if (!bss)
 151                 goto out_free;
 152
 153         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 154         bss->driver = wpa_s->driver;
 155         bss->drv_priv = wpa_s->drv_priv;
 156         bss->iface = ifmsh;
 157         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 158         wpa_s->assoc_freq = ssid->frequency;
 159         wpa_s->current_ssid = ssid;
 160
 161         /* setup an AP config for auth processing */
 162         conf = hostapd_config_defaults();
 163         if (!conf)
 164                 goto out_free;
 165
 166         bss->conf = *conf->bss;
 167         bss->conf->start_disabled = 1;
 168         bss->conf->mesh = MESH_ENABLED;
 169         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 170         bss->iconf = conf;
 171         ifmsh->conf = conf;
 172
 173         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 174         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 175                 wpa_s->conf->dot11RSNASAERetransPeriod;
 176         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 177
 178         mconf = mesh_config_create(ssid);
 179         if (!mconf)
 180                 goto out_free;
 181         ifmsh->mconf = mconf;
 182
 183         /* need conf->hw_mode for supported rates. */
 184         if (ssid->frequency == 0) {
 185                 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
 186                 conf->channel = 1;
 187         } else {
 188                 conf->hw_mode = ieee80211_freq_to_chan(ssid->frequency,
 189                                                        &conf->channel);
 190         }
 191         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 192                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 193                            ssid->frequency);
 194                 goto out_free;
 195         }
 196         if (ssid->ht40)
 197                 conf->secondary_channel = ssid->ht40;
 198         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 199                 conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 200                 switch (conf->vht_oper_chwidth) {
 201                 case VHT_CHANWIDTH_80MHZ:
 202                 case VHT_CHANWIDTH_80P80MHZ:
 203                         ieee80211_freq_to_chan(
 204                                 ssid->frequency,
 205                                 &conf->vht_oper_centr_freq_seg0_idx);
 206                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 207                         break;
 208                 case VHT_CHANWIDTH_160MHZ:
 209                         ieee80211_freq_to_chan(
 210                                 ssid->frequency,
 211                                 &conf->vht_oper_centr_freq_seg0_idx);
 212                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 213                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 214                         break;
 215                 }
 216                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 217                                        &conf->vht_oper_centr_freq_seg1_idx);
 218         }
 219
 220         if (ssid->mesh_basic_rates == NULL) {
 221                 /*
 222                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 223                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 224                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 225                  * this is way easier. This also makes our BSSBasicRateSet
 226                  * advertised in beacons match the one in peering frames, sigh.
 227                  */
 228                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 229                         conf->basic_rates = os_malloc(sizeof(basic_rates_erp));
 230                         if (!conf->basic_rates)
 231                                 goto out_free;
 232                         os_memcpy(conf->basic_rates, basic_rates_erp,
 233                                   sizeof(basic_rates_erp));
 234                 }
 235         } else {
 236                 rate_len = 0;
 237                 while (1) {
 238                         if (ssid->mesh_basic_rates[rate_len] < 1)
 239                                 break;
 240                         rate_len++;
 241                 }
 242                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 243                 if (conf->basic_rates == NULL)
 244                         goto out_free;
 245                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 246                           rate_len * sizeof(int));
 247                 conf->basic_rates[rate_len] = -1;
 248         }
 249
 250         if (hostapd_setup_interface(ifmsh)) {
 251                 wpa_printf(MSG_ERROR,
 252                            "Failed to initialize hostapd interface for mesh");
 253                 return -1;
 254         }
 255
 256         if (wpa_drv_init_mesh(wpa_s)) {
 257                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 258                 return -1;
 259         }
 260
 261         if (mconf->security != MESH_CONF_SEC_NONE) {
 262                 if (ssid->passphrase == NULL) {
 263                         wpa_printf(MSG_ERROR,
 264                                    "mesh: Passphrase for SAE not configured");
 265                         goto out_free;
 266                 }
 267
 268                 bss->conf->wpa = ssid->proto;
 269                 bss->conf->wpa_key_mgmt = ssid->key_mgmt;
 270
 271                 if (wpa_s->conf->sae_groups &&
 272                     wpa_s->conf->sae_groups[0] > 0) {
 273                         wpas_mesh_copy_groups(bss, wpa_s);
 274                 } else {
 275                         bss->conf->sae_groups =
 276                                 os_malloc(sizeof(default_groups));
 277                         if (!bss->conf->sae_groups)
 278                                 goto out_free;
 279                         os_memcpy(bss->conf->sae_groups, default_groups,
 280                                   sizeof(default_groups));
 281                 }
 282
 283                 len = os_strlen(ssid->passphrase);
 284                 bss->conf->ssid.wpa_passphrase =
 285                         dup_binstr(ssid->passphrase, len);
 286
 287                 wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, mconf);
 288                 if (!wpa_s->mesh_rsn)
 289                         goto out_free;
 290         }
 291
 292         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 293
 294         return 0;
 295 out_free:
 296         wpa_supplicant_mesh_deinit(wpa_s);
 297         return -ENOMEM;
 298 }
 299
 300
 301 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 302                           const u8 *ies, size_t ie_len)
 303 {
 304         struct ieee802_11_elems elems;
 305
 306         wpa_msg(wpa_s, MSG_INFO,
 307                 "new peer notification for " MACSTR, MAC2STR(addr));
 308
 309         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 310                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 311                         MAC2STR(addr));
 312                 return;
 313         }
 314         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 315 }
 316
 317
 318 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 319                                      struct wpabuf **extra_ie)
 320 {
 321         /* EID + 0-length (wildcard) mesh-id */
 322         size_t ielen = 2;
 323
 324         if (wpabuf_resize(extra_ie, ielen) == 0) {
 325                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 326                 wpabuf_put_u8(*extra_ie, 0);
 327         }
 328 }
 329
 330
 331 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 332                              struct wpa_ssid *ssid)
 333 {
 334         struct wpa_driver_mesh_join_params params;
 335         int ret = 0;
 336
 337         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency) {
 338                 ret = -ENOENT;
 339                 goto out;
 340         }
 341
 342         wpa_supplicant_mesh_deinit(wpa_s);
 343
 344         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 345                 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
 346                 wpa_s->group_cipher = WPA_CIPHER_CCMP;
 347                 wpa_s->mgmt_group_cipher = 0;
 348         } else {
 349                 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 350                 wpa_s->group_cipher = WPA_CIPHER_NONE;
 351                 wpa_s->mgmt_group_cipher = 0;
 352         }
 353
 354         os_memset(&params, 0, sizeof(params));
 355         params.meshid = ssid->ssid;
 356         params.meshid_len = ssid->ssid_len;
 357         ibss_mesh_setup_freq(wpa_s, ssid, &params.freq);
 358         wpa_s->mesh_ht_enabled = !!params.freq.ht_enabled;
 359         wpa_s->mesh_vht_enabled = !!params.freq.vht_enabled;
 360         if (params.freq.ht_enabled && params.freq.sec_channel_offset)
 361                 ssid->ht40 = params.freq.sec_channel_offset;
 362         if (wpa_s->mesh_vht_enabled) {
 363                 ssid->vht = 1;
 364                 switch (params.freq.bandwidth) {
 365                 case 80:
 366                         if (params.freq.center_freq2) {
 367                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
 368                                 ssid->vht_center_freq2 =
 369                                         params.freq.center_freq2;
 370                         } else {
 371                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80MHZ;
 372                         }
 373                         break;
 374                 case 160:
 375                         ssid->max_oper_chwidth = VHT_CHANWIDTH_160MHZ;
 376                         break;
 377                 default:
 378                         ssid->max_oper_chwidth = VHT_CHANWIDTH_USE_HT;
 379                         break;
 380                 }
 381         }
 382         if (ssid->beacon_int > 0)
 383                 params.beacon_int = ssid->beacon_int;
 384         else if (wpa_s->conf->beacon_int > 0)
 385                 params.beacon_int = wpa_s->conf->beacon_int;
 386         params.max_peer_links = wpa_s->conf->max_peer_links;
 387
 388         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 389                 params.flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 390                 params.flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 391                 wpa_s->conf->user_mpm = 1;
 392         }
 393
 394         if (wpa_s->conf->user_mpm) {
 395                 params.flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 396                 params.conf.flags &= ~WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
 397         } else {
 398                 params.flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 399                 params.conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS;
 400         }
 401         params.conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 402
 403         if (wpa_supplicant_mesh_init(wpa_s, ssid)) {
 404                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 405                 wpa_drv_leave_mesh(wpa_s);
 406                 ret = -1;
 407                 goto out;
 408         }
 409
 410         if (wpa_s->ifmsh) {
 411                 params.ies = wpa_s->ifmsh->mconf->rsn_ie;
 412                 params.ie_len = wpa_s->ifmsh->mconf->rsn_ie_len;
 413                 params.basic_rates = wpa_s->ifmsh->basic_rates;
 414         }
 415
 416         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 417                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 418         ret = wpa_drv_join_mesh(wpa_s, &params);
 419         if (ret)
 420                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d\n", ret);
 421
 422         /* hostapd sets the interface down until we associate */
 423         wpa_drv_set_operstate(wpa_s, 1);
 424
 425 out:
 426         return ret;
 427 }
 428
 429
 430 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 431 {
 432         int ret = 0;
 433
 434         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 435
 436         /* Need to send peering close messages first */
 437         wpa_supplicant_mesh_deinit(wpa_s);
 438
 439         ret = wpa_drv_leave_mesh(wpa_s);
 440         if (ret)
 441                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 442
 443         wpa_drv_set_operstate(wpa_s, 1);
 444
 445         return ret;
 446 }
 447
 448
 449 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 450 {
 451         struct ieee802_11_elems elems;
 452         char *mesh_id, *pos = buf;
 453         u8 *bss_basic_rate_set;
 454         int bss_basic_rate_set_len, ret, i;
 455
 456         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 457                 return -1;
 458
 459         if (elems.mesh_id_len < 1)
 460                 return 0;
 461
 462         mesh_id = os_malloc(elems.mesh_id_len + 1);
 463         if (mesh_id == NULL)
 464                 return -1;
 465
 466         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 467         mesh_id[elems.mesh_id_len] = '\0';
 468         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 469         os_free(mesh_id);
 470         if (os_snprintf_error(end - pos, ret))
 471                 return pos - buf;
 472         pos += ret;
 473
 474         if (elems.mesh_config_len > 6) {
 475                 ret = os_snprintf(pos, end - pos,
 476                                   "active_path_selection_protocol_id=0x%02x\n"
 477                                   "active_path_selection_metric_id=0x%02x\n"
 478                                   "congestion_control_mode_id=0x%02x\n"
 479                                   "synchronization_method_id=0x%02x\n"
 480                                   "authentication_protocol_id=0x%02x\n"
 481                                   "mesh_formation_info=0x%02x\n"
 482                                   "mesh_capability=0x%02x\n",
 483                                   elems.mesh_config[0], elems.mesh_config[1],
 484                                   elems.mesh_config[2], elems.mesh_config[3],
 485                                   elems.mesh_config[4], elems.mesh_config[5],
 486                                   elems.mesh_config[6]);
 487                 if (os_snprintf_error(end - pos, ret))
 488                         return pos - buf;
 489                 pos += ret;
 490         }
 491
 492         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 493                 elems.ext_supp_rates_len);
 494         if (bss_basic_rate_set == NULL)
 495                 return -1;
 496
 497         bss_basic_rate_set_len = 0;
 498         for (i = 0; i < elems.supp_rates_len; i++) {
 499                 if (elems.supp_rates[i] & 0x80) {
 500                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 501                                 (elems.supp_rates[i] & 0x7f) * 5;
 502                 }
 503         }
 504         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 505                 if (elems.ext_supp_rates[i] & 0x80) {
 506                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 507                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 508                 }
 509         }
 510         if (bss_basic_rate_set_len > 0) {
 511                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 512                                   bss_basic_rate_set[0]);
 513                 if (os_snprintf_error(end - pos, ret))
 514                         goto fail;
 515                 pos += ret;
 516
 517                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 518                         ret = os_snprintf(pos, end - pos, " %d",
 519                                           bss_basic_rate_set[i]);
 520                         if (os_snprintf_error(end - pos, ret))
 521                                 goto fail;
 522                         pos += ret;
 523                 }
 524
 525                 ret = os_snprintf(pos, end - pos, "\n");
 526                 if (os_snprintf_error(end - pos, ret))
 527                         goto fail;
 528                 pos += ret;
 529         }
 530 fail:
 531         os_free(bss_basic_rate_set);
 532
 533         return pos - buf;
 534 }
 535
 536
 537 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 538                                char *end)
 539 {
 540         return mesh_attr_text(ies, ies_len, buf, end);
 541 }
 542
 543
 544 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 545                                 size_t len)
 546 {
 547         char *ifname_ptr = wpa_s->ifname;
 548         int res;
 549
 550         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 551                           wpa_s->mesh_if_idx);
 552         if (os_snprintf_error(len, res) ||
 553             (os_strlen(ifname) >= IFNAMSIZ &&
 554              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 555                 /* Try to avoid going over the IFNAMSIZ length limit */
 556                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 557                 if (os_snprintf_error(len, res))
 558                         return -1;
 559         }
 560         wpa_s->mesh_if_idx++;
 561         return 0;
 562 }
 563
 564
 565 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 566                             size_t len)
 567 {
 568         struct wpa_interface iface;
 569         struct wpa_supplicant *mesh_wpa_s;
 570         u8 addr[ETH_ALEN];
 571
 572         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 573                 return -1;
 574
 575         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 576                            NULL) < 0) {
 577                 wpa_printf(MSG_ERROR,
 578                            "mesh: Failed to create new mesh interface");
 579                 return -1;
 580         }
 581         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 582                    MACSTR, ifname, MAC2STR(addr));
 583
 584         os_memset(&iface, 0, sizeof(iface));
 585         iface.ifname = ifname;
 586         iface.driver = wpa_s->driver->name;
 587         iface.driver_param = wpa_s->conf->driver_param;
 588         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 589
 590         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 591         if (!mesh_wpa_s) {
 592                 wpa_printf(MSG_ERROR,
 593                            "mesh: Failed to create new wpa_supplicant interface");
 594                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 595                 return -1;
 596         }
 597         mesh_wpa_s->mesh_if_created = 1;
 598         return 0;
 599 }
 600
 601
 602 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 603 {
 604         return mesh_mpm_close_peer(wpa_s, addr);
 605 }