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