contrib/wpa/wpa_supplicant/mesh.c

   1 /*
   2  * WPA Supplicant - Basic mesh mode routines
   3  * Copyright (c) 2013-2014, cozybit, Inc.  All rights reserved.
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "utils/uuid.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "ap/sta_info.h"
  17 #include "ap/hostapd.h"
  18 #include "ap/ieee802_11.h"
  19 #include "config_ssid.h"
  20 #include "config.h"
  21 #include "wpa_supplicant_i.h"
  22 #include "driver_i.h"
  23 #include "notify.h"
  24 #include "ap.h"
  25 #include "mesh_mpm.h"
  26 #include "mesh_rsn.h"
  27 #include "mesh.h"
  28
  29
  30 static void wpa_supplicant_mesh_deinit(struct wpa_supplicant *wpa_s)
  31 {
  32         wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
  33         wpa_s->ifmsh = NULL;
  34         wpa_s->current_ssid = NULL;
  35         os_free(wpa_s->mesh_rsn);
  36         wpa_s->mesh_rsn = NULL;
  37         os_free(wpa_s->mesh_params);
  38         wpa_s->mesh_params = NULL;
  39         /* TODO: leave mesh (stop beacon). This will happen on link down
  40          * anyway, so it's not urgent */
  41 }
  42
  43
  44 void wpa_supplicant_mesh_iface_deinit(struct wpa_supplicant *wpa_s,
  45                                       struct hostapd_iface *ifmsh)
  46 {
  47         if (!ifmsh)
  48                 return;
  49
  50         if (ifmsh->mconf) {
  51                 mesh_mpm_deinit(wpa_s, ifmsh);
  52                 if (ifmsh->mconf->rsn_ie) {
  53                         ifmsh->mconf->rsn_ie = NULL;
  54                         /* We cannot free this struct
  55                          * because wpa_authenticator on
  56                          * hostapd side is also using it
  57                          * for now just set to NULL and
  58                          * let hostapd code free it.
  59                          */
  60                 }
  61                 os_free(ifmsh->mconf);
  62                 ifmsh->mconf = NULL;
  63         }
  64
  65         /* take care of shared data */
  66         hostapd_interface_deinit(ifmsh);
  67         hostapd_interface_free(ifmsh);
  68 }
  69
  70
  71 static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
  72                                              struct wpa_ssid *ssid)
  73 {
  74         struct mesh_conf *conf;
  75         int cipher;
  76
  77         conf = os_zalloc(sizeof(struct mesh_conf));
  78         if (!conf)
  79                 return NULL;
  80
  81         os_memcpy(conf->meshid, ssid->ssid, ssid->ssid_len);
  82         conf->meshid_len = ssid->ssid_len;
  83
  84         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE)
  85                 conf->security |= MESH_CONF_SEC_AUTH |
  86                         MESH_CONF_SEC_AMPE;
  87         else
  88                 conf->security |= MESH_CONF_SEC_NONE;
  89 #ifdef CONFIG_IEEE80211W
  90         conf->ieee80211w = ssid->ieee80211w;
  91         if (conf->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
  92                 if (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)
  93                         conf->ieee80211w = wpa_s->conf->pmf;
  94                 else
  95                         conf->ieee80211w = NO_MGMT_FRAME_PROTECTION;
  96         }
  97 #endif /* CONFIG_IEEE80211W */
  98 #ifdef CONFIG_OCV
  99         conf->ocv = ssid->ocv;
 100 #endif /* CONFIG_OCV */
 101
 102         cipher = wpa_pick_pairwise_cipher(ssid->pairwise_cipher, 0);
 103         if (cipher < 0 || cipher == WPA_CIPHER_TKIP) {
 104                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid pairwise cipher");
 105                 os_free(conf);
 106                 return NULL;
 107         }
 108         conf->pairwise_cipher = cipher;
 109
 110         cipher = wpa_pick_group_cipher(ssid->group_cipher);
 111         if (cipher < 0 || cipher == WPA_CIPHER_TKIP ||
 112             cipher == WPA_CIPHER_GTK_NOT_USED) {
 113                 wpa_msg(wpa_s, MSG_INFO, "mesh: Invalid group cipher");
 114                 os_free(conf);
 115                 return NULL;
 116         }
 117
 118         conf->group_cipher = cipher;
 119         if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION)
 120                 conf->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
 121
 122         /* defaults */
 123         conf->mesh_pp_id = MESH_PATH_PROTOCOL_HWMP;
 124         conf->mesh_pm_id = MESH_PATH_METRIC_AIRTIME;
 125         conf->mesh_cc_id = 0;
 126         conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
 127         conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
 128         conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
 129         conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
 130         conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
 131         conf->dot11MeshHoldingTimeout = ssid->dot11MeshHoldingTimeout;
 132
 133         return conf;
 134 }
 135
 136
 137 static void wpas_mesh_copy_groups(struct hostapd_data *bss,
 138                                   struct wpa_supplicant *wpa_s)
 139 {
 140         int num_groups;
 141         size_t groups_size;
 142
 143         for (num_groups = 0; wpa_s->conf->sae_groups[num_groups] > 0;
 144              num_groups++)
 145                 ;
 146
 147         groups_size = (num_groups + 1) * sizeof(wpa_s->conf->sae_groups[0]);
 148         bss->conf->sae_groups = os_malloc(groups_size);
 149         if (bss->conf->sae_groups)
 150                 os_memcpy(bss->conf->sae_groups, wpa_s->conf->sae_groups,
 151                           groups_size);
 152 }
 153
 154
 155 static int wpas_mesh_init_rsn(struct wpa_supplicant *wpa_s)
 156 {
 157         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 158         struct wpa_ssid *ssid = wpa_s->current_ssid;
 159         struct hostapd_data *bss = ifmsh->bss[0];
 160         static int default_groups[] = { 19, 20, 21, 25, 26, -1 };
 161         const char *password;
 162         size_t len;
 163
 164         password = ssid->sae_password;
 165         if (!password)
 166                 password = ssid->passphrase;
 167         if (!password) {
 168                 wpa_printf(MSG_ERROR,
 169                            "mesh: Passphrase for SAE not configured");
 170                 return -1;
 171         }
 172
 173         bss->conf->wpa = ssid->proto;
 174         bss->conf->wpa_key_mgmt = ssid->key_mgmt;
 175
 176         if (wpa_s->conf->sae_groups && wpa_s->conf->sae_groups[0] > 0) {
 177                 wpas_mesh_copy_groups(bss, wpa_s);
 178         } else {
 179                 bss->conf->sae_groups = os_memdup(default_groups,
 180                                                   sizeof(default_groups));
 181                 if (!bss->conf->sae_groups)
 182                         return -1;
 183         }
 184
 185         len = os_strlen(password);
 186         bss->conf->ssid.wpa_passphrase = dup_binstr(password, len);
 187
 188         wpa_s->mesh_rsn = mesh_rsn_auth_init(wpa_s, ifmsh->mconf);
 189         return !wpa_s->mesh_rsn ? -1 : 0;
 190 }
 191
 192
 193 static int wpas_mesh_complete(struct wpa_supplicant *wpa_s)
 194 {
 195         struct hostapd_iface *ifmsh = wpa_s->ifmsh;
 196         struct wpa_driver_mesh_join_params *params = wpa_s->mesh_params;
 197         struct wpa_ssid *ssid = wpa_s->current_ssid;
 198         int ret;
 199
 200         if (!params || !ssid || !ifmsh) {
 201                 wpa_printf(MSG_ERROR, "mesh: %s called without active mesh",
 202                            __func__);
 203                 return -1;
 204         }
 205
 206         if (ifmsh->mconf->security != MESH_CONF_SEC_NONE &&
 207             wpas_mesh_init_rsn(wpa_s)) {
 208                 wpa_printf(MSG_ERROR,
 209                            "mesh: RSN initialization failed - deinit mesh");
 210                 wpa_supplicant_mesh_deinit(wpa_s);
 211                 wpa_drv_leave_mesh(wpa_s);
 212                 return -1;
 213         }
 214
 215         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 216                 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
 217                 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
 218                 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
 219         }
 220
 221         params->ies = ifmsh->mconf->rsn_ie;
 222         params->ie_len = ifmsh->mconf->rsn_ie_len;
 223         params->basic_rates = ifmsh->basic_rates;
 224         params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE;
 225         params->conf.ht_opmode = ifmsh->bss[0]->iface->ht_op_mode;
 226
 227         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 228                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 229         ret = wpa_drv_join_mesh(wpa_s, params);
 230         if (ret)
 231                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
 232
 233         /* hostapd sets the interface down until we associate */
 234         wpa_drv_set_operstate(wpa_s, 1);
 235
 236         if (!ret)
 237                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 238
 239         return ret;
 240 }
 241
 242
 243 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
 244                                     struct wpa_ssid *ssid,
 245                                     struct hostapd_freq_params *freq)
 246 {
 247         struct hostapd_iface *ifmsh;
 248         struct hostapd_data *bss;
 249         struct hostapd_config *conf;
 250         struct mesh_conf *mconf;
 251         int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
 252         int rate_len;
 253         int frequency;
 254
 255         if (!wpa_s->conf->user_mpm) {
 256                 /* not much for us to do here */
 257                 wpa_msg(wpa_s, MSG_WARNING,
 258                         "user_mpm is not enabled in configuration");
 259                 return 0;
 260         }
 261
 262         wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
 263         if (!ifmsh)
 264                 return -ENOMEM;
 265
 266         ifmsh->drv_flags = wpa_s->drv_flags;
 267         ifmsh->num_bss = 1;
 268         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 269                                sizeof(struct hostapd_data *));
 270         if (!ifmsh->bss)
 271                 goto out_free;
 272
 273         ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
 274         if (!bss)
 275                 goto out_free;
 276
 277         ifmsh->bss[0]->msg_ctx = wpa_s;
 278         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 279         bss->driver = wpa_s->driver;
 280         bss->drv_priv = wpa_s->drv_priv;
 281         bss->iface = ifmsh;
 282         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 283         frequency = ssid->frequency;
 284         if (frequency != freq->freq &&
 285             frequency == freq->freq + freq->sec_channel_offset * 20) {
 286                 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
 287                 frequency = freq->freq;
 288         }
 289         wpa_s->assoc_freq = frequency;
 290         wpa_s->current_ssid = ssid;
 291
 292         /* setup an AP config for auth processing */
 293         conf = hostapd_config_defaults();
 294         if (!conf)
 295                 goto out_free;
 296
 297         bss->conf = *conf->bss;
 298         bss->conf->start_disabled = 1;
 299         bss->conf->mesh = MESH_ENABLED;
 300         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 301
 302         if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
 303                              wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
 304                 conf->ieee80211h = 1;
 305                 conf->ieee80211d = 1;
 306                 conf->country[0] = wpa_s->conf->country[0];
 307                 conf->country[1] = wpa_s->conf->country[1];
 308                 conf->country[2] = ' ';
 309         }
 310
 311         bss->iconf = conf;
 312         ifmsh->conf = conf;
 313
 314         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 315         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 316                 wpa_s->conf->dot11RSNASAERetransPeriod;
 317         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 318
 319         mconf = mesh_config_create(wpa_s, ssid);
 320         if (!mconf)
 321                 goto out_free;
 322         ifmsh->mconf = mconf;
 323
 324         /* need conf->hw_mode for supported rates. */
 325         conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
 326         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 327                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 328                            frequency);
 329                 goto out_free;
 330         }
 331         if (ssid->ht40)
 332                 conf->secondary_channel = ssid->ht40;
 333         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 334                 if (ssid->max_oper_chwidth != DEFAULT_MAX_OPER_CHWIDTH)
 335                         conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 336                 switch (conf->vht_oper_chwidth) {
 337                 case CHANWIDTH_80MHZ:
 338                 case CHANWIDTH_80P80MHZ:
 339                         ieee80211_freq_to_chan(
 340                                 frequency,
 341                                 &conf->vht_oper_centr_freq_seg0_idx);
 342                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 343                         break;
 344                 case CHANWIDTH_160MHZ:
 345                         ieee80211_freq_to_chan(
 346                                 frequency,
 347                                 &conf->vht_oper_centr_freq_seg0_idx);
 348                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 349                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 350                         break;
 351                 }
 352                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 353                                        &conf->vht_oper_centr_freq_seg1_idx);
 354         }
 355
 356         if (ssid->mesh_basic_rates == NULL) {
 357                 /*
 358                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 359                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 360                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 361                  * this is way easier. This also makes our BSSBasicRateSet
 362                  * advertised in beacons match the one in peering frames, sigh.
 363                  */
 364                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 365                         conf->basic_rates = os_memdup(basic_rates_erp,
 366                                                       sizeof(basic_rates_erp));
 367                         if (!conf->basic_rates)
 368                                 goto out_free;
 369                 }
 370         } else {
 371                 rate_len = 0;
 372                 while (1) {
 373                         if (ssid->mesh_basic_rates[rate_len] < 1)
 374                                 break;
 375                         rate_len++;
 376                 }
 377                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 378                 if (conf->basic_rates == NULL)
 379                         goto out_free;
 380                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 381                           rate_len * sizeof(int));
 382                 conf->basic_rates[rate_len] = -1;
 383         }
 384
 385         if (wpa_drv_init_mesh(wpa_s)) {
 386                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 387                 return -1;
 388         }
 389
 390         if (hostapd_setup_interface(ifmsh)) {
 391                 wpa_printf(MSG_ERROR,
 392                            "Failed to initialize hostapd interface for mesh");
 393                 return -1;
 394         }
 395
 396         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 397
 398         return 0;
 399 out_free:
 400         wpa_supplicant_mesh_deinit(wpa_s);
 401         return -ENOMEM;
 402 }
 403
 404
 405 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 406                           const u8 *ies, size_t ie_len)
 407 {
 408         struct ieee802_11_elems elems;
 409
 410         wpa_msg(wpa_s, MSG_INFO,
 411                 "new peer notification for " MACSTR, MAC2STR(addr));
 412
 413         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 414                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 415                         MAC2STR(addr));
 416                 return;
 417         }
 418         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 419 }
 420
 421
 422 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 423                                      struct wpabuf **extra_ie)
 424 {
 425         /* EID + 0-length (wildcard) mesh-id */
 426         size_t ielen = 2;
 427
 428         if (wpabuf_resize(extra_ie, ielen) == 0) {
 429                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 430                 wpabuf_put_u8(*extra_ie, 0);
 431         }
 432 }
 433
 434
 435 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 436                              struct wpa_ssid *ssid)
 437 {
 438         struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
 439         int ret = 0;
 440
 441         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
 442             !params) {
 443                 ret = -ENOENT;
 444                 os_free(params);
 445                 goto out;
 446         }
 447
 448         wpa_supplicant_mesh_deinit(wpa_s);
 449
 450         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 451         wpa_s->group_cipher = WPA_CIPHER_NONE;
 452         wpa_s->mgmt_group_cipher = 0;
 453
 454         params->meshid = ssid->ssid;
 455         params->meshid_len = ssid->ssid_len;
 456         ibss_mesh_setup_freq(wpa_s, ssid, &params->freq);
 457         wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
 458         wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
 459         wpa_s->mesh_he_enabled = !!params->freq.he_enabled;
 460         if (params->freq.ht_enabled && params->freq.sec_channel_offset)
 461                 ssid->ht40 = params->freq.sec_channel_offset;
 462
 463         if (wpa_s->mesh_vht_enabled) {
 464                 ssid->vht = 1;
 465                 ssid->vht_center_freq1 = params->freq.center_freq1;
 466                 switch (params->freq.bandwidth) {
 467                 case 80:
 468                         if (params->freq.center_freq2) {
 469                                 ssid->max_oper_chwidth = CHANWIDTH_80P80MHZ;
 470                                 ssid->vht_center_freq2 =
 471                                         params->freq.center_freq2;
 472                         } else {
 473                                 ssid->max_oper_chwidth = CHANWIDTH_80MHZ;
 474                         }
 475                         break;
 476                 case 160:
 477                         ssid->max_oper_chwidth = CHANWIDTH_160MHZ;
 478                         break;
 479                 default:
 480                         ssid->max_oper_chwidth = CHANWIDTH_USE_HT;
 481                         break;
 482                 }
 483         }
 484         if (wpa_s->mesh_he_enabled)
 485                 ssid->he = 1;
 486         if (ssid->beacon_int > 0)
 487                 params->beacon_int = ssid->beacon_int;
 488         else if (wpa_s->conf->beacon_int > 0)
 489                 params->beacon_int = wpa_s->conf->beacon_int;
 490         if (ssid->dtim_period > 0)
 491                 params->dtim_period = ssid->dtim_period;
 492         else if (wpa_s->conf->dtim_period > 0)
 493                 params->dtim_period = wpa_s->conf->dtim_period;
 494         params->conf.max_peer_links = wpa_s->conf->max_peer_links;
 495         if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
 496                 params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
 497                 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
 498         }
 499
 500         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 501                 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 502                 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 503                 wpa_s->conf->user_mpm = 1;
 504         }
 505
 506         if (wpa_s->conf->user_mpm) {
 507                 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 508                 params->conf.auto_plinks = 0;
 509         } else {
 510                 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 511                 params->conf.auto_plinks = 1;
 512         }
 513         params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 514
 515         os_free(wpa_s->mesh_params);
 516         wpa_s->mesh_params = params;
 517         if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
 518                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 519                 wpa_drv_leave_mesh(wpa_s);
 520                 ret = -1;
 521                 goto out;
 522         }
 523
 524         ret = wpas_mesh_complete(wpa_s);
 525 out:
 526         return ret;
 527 }
 528
 529
 530 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 531 {
 532         int ret = 0;
 533
 534         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 535
 536         /* Need to send peering close messages first */
 537         wpa_supplicant_mesh_deinit(wpa_s);
 538
 539         ret = wpa_drv_leave_mesh(wpa_s);
 540         if (ret)
 541                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 542
 543         wpa_drv_set_operstate(wpa_s, 1);
 544
 545         return ret;
 546 }
 547
 548
 549 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 550 {
 551         struct ieee802_11_elems elems;
 552         char *mesh_id, *pos = buf;
 553         u8 *bss_basic_rate_set;
 554         int bss_basic_rate_set_len, ret, i;
 555
 556         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 557                 return -1;
 558
 559         if (elems.mesh_id_len < 1)
 560                 return 0;
 561
 562         mesh_id = os_malloc(elems.mesh_id_len + 1);
 563         if (mesh_id == NULL)
 564                 return -1;
 565
 566         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 567         mesh_id[elems.mesh_id_len] = '\0';
 568         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 569         os_free(mesh_id);
 570         if (os_snprintf_error(end - pos, ret))
 571                 return pos - buf;
 572         pos += ret;
 573
 574         if (elems.mesh_config_len > 6) {
 575                 ret = os_snprintf(pos, end - pos,
 576                                   "active_path_selection_protocol_id=0x%02x\n"
 577                                   "active_path_selection_metric_id=0x%02x\n"
 578                                   "congestion_control_mode_id=0x%02x\n"
 579                                   "synchronization_method_id=0x%02x\n"
 580                                   "authentication_protocol_id=0x%02x\n"
 581                                   "mesh_formation_info=0x%02x\n"
 582                                   "mesh_capability=0x%02x\n",
 583                                   elems.mesh_config[0], elems.mesh_config[1],
 584                                   elems.mesh_config[2], elems.mesh_config[3],
 585                                   elems.mesh_config[4], elems.mesh_config[5],
 586                                   elems.mesh_config[6]);
 587                 if (os_snprintf_error(end - pos, ret))
 588                         return pos - buf;
 589                 pos += ret;
 590         }
 591
 592         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 593                 elems.ext_supp_rates_len);
 594         if (bss_basic_rate_set == NULL)
 595                 return -1;
 596
 597         bss_basic_rate_set_len = 0;
 598         for (i = 0; i < elems.supp_rates_len; i++) {
 599                 if (elems.supp_rates[i] & 0x80) {
 600                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 601                                 (elems.supp_rates[i] & 0x7f) * 5;
 602                 }
 603         }
 604         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 605                 if (elems.ext_supp_rates[i] & 0x80) {
 606                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 607                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 608                 }
 609         }
 610         if (bss_basic_rate_set_len > 0) {
 611                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 612                                   bss_basic_rate_set[0]);
 613                 if (os_snprintf_error(end - pos, ret))
 614                         goto fail;
 615                 pos += ret;
 616
 617                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 618                         ret = os_snprintf(pos, end - pos, " %d",
 619                                           bss_basic_rate_set[i]);
 620                         if (os_snprintf_error(end - pos, ret))
 621                                 goto fail;
 622                         pos += ret;
 623                 }
 624
 625                 ret = os_snprintf(pos, end - pos, "\n");
 626                 if (os_snprintf_error(end - pos, ret))
 627                         goto fail;
 628                 pos += ret;
 629         }
 630 fail:
 631         os_free(bss_basic_rate_set);
 632
 633         return pos - buf;
 634 }
 635
 636
 637 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 638                                char *end)
 639 {
 640         return mesh_attr_text(ies, ies_len, buf, end);
 641 }
 642
 643
 644 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 645                                 size_t len)
 646 {
 647         char *ifname_ptr = wpa_s->ifname;
 648         int res;
 649
 650         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 651                           wpa_s->mesh_if_idx);
 652         if (os_snprintf_error(len, res) ||
 653             (os_strlen(ifname) >= IFNAMSIZ &&
 654              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 655                 /* Try to avoid going over the IFNAMSIZ length limit */
 656                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 657                 if (os_snprintf_error(len, res))
 658                         return -1;
 659         }
 660         wpa_s->mesh_if_idx++;
 661         return 0;
 662 }
 663
 664
 665 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 666                             size_t len)
 667 {
 668         struct wpa_interface iface;
 669         struct wpa_supplicant *mesh_wpa_s;
 670         u8 addr[ETH_ALEN];
 671
 672         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 673                 return -1;
 674
 675         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 676                            NULL) < 0) {
 677                 wpa_printf(MSG_ERROR,
 678                            "mesh: Failed to create new mesh interface");
 679                 return -1;
 680         }
 681         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 682                    MACSTR, ifname, MAC2STR(addr));
 683
 684         os_memset(&iface, 0, sizeof(iface));
 685         iface.ifname = ifname;
 686         iface.driver = wpa_s->driver->name;
 687         iface.driver_param = wpa_s->conf->driver_param;
 688         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 689
 690         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 691         if (!mesh_wpa_s) {
 692                 wpa_printf(MSG_ERROR,
 693                            "mesh: Failed to create new wpa_supplicant interface");
 694                 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
 695                 return -1;
 696         }
 697         mesh_wpa_s->mesh_if_created = 1;
 698         return 0;
 699 }
 700
 701
 702 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 703 {
 704         return mesh_mpm_close_peer(wpa_s, addr);
 705 }
 706
 707
 708 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
 709                        int duration)
 710 {
 711         return mesh_mpm_connect_peer(wpa_s, addr, duration);
 712 }