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) {
 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                 return -1;
 212         }
 213
 214         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 215                 wpa_s->pairwise_cipher = wpa_s->mesh_rsn->pairwise_cipher;
 216                 wpa_s->group_cipher = wpa_s->mesh_rsn->group_cipher;
 217                 wpa_s->mgmt_group_cipher = wpa_s->mesh_rsn->mgmt_group_cipher;
 218         }
 219
 220         if (ifmsh) {
 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
 228         wpa_msg(wpa_s, MSG_INFO, "joining mesh %s",
 229                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 230         ret = wpa_drv_join_mesh(wpa_s, params);
 231         if (ret)
 232                 wpa_msg(wpa_s, MSG_ERROR, "mesh join error=%d", ret);
 233
 234         /* hostapd sets the interface down until we associate */
 235         wpa_drv_set_operstate(wpa_s, 1);
 236
 237         if (!ret)
 238                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 239
 240         return ret;
 241 }
 242
 243
 244 static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
 245                                     struct wpa_ssid *ssid,
 246                                     struct hostapd_freq_params *freq)
 247 {
 248         struct hostapd_iface *ifmsh;
 249         struct hostapd_data *bss;
 250         struct hostapd_config *conf;
 251         struct mesh_conf *mconf;
 252         int basic_rates_erp[] = { 10, 20, 55, 60, 110, 120, 240, -1 };
 253         int rate_len;
 254         int frequency, saved_freq;
 255
 256         if (!wpa_s->conf->user_mpm) {
 257                 /* not much for us to do here */
 258                 wpa_msg(wpa_s, MSG_WARNING,
 259                         "user_mpm is not enabled in configuration");
 260                 return 0;
 261         }
 262
 263         wpa_s->ifmsh = ifmsh = hostapd_alloc_iface();
 264         if (!ifmsh)
 265                 return -ENOMEM;
 266
 267         ifmsh->drv_flags = wpa_s->drv_flags;
 268         ifmsh->num_bss = 1;
 269         ifmsh->bss = os_calloc(wpa_s->ifmsh->num_bss,
 270                                sizeof(struct hostapd_data *));
 271         if (!ifmsh->bss)
 272                 goto out_free;
 273
 274         ifmsh->bss[0] = bss = hostapd_alloc_bss_data(NULL, NULL, NULL);
 275         if (!bss)
 276                 goto out_free;
 277
 278         ifmsh->bss[0]->msg_ctx = wpa_s;
 279         os_memcpy(bss->own_addr, wpa_s->own_addr, ETH_ALEN);
 280         bss->driver = wpa_s->driver;
 281         bss->drv_priv = wpa_s->drv_priv;
 282         bss->iface = ifmsh;
 283         bss->mesh_sta_free_cb = mesh_mpm_free_sta;
 284         frequency = ssid->frequency;
 285         if (frequency != freq->freq &&
 286             frequency == freq->freq + freq->sec_channel_offset * 20) {
 287                 wpa_printf(MSG_DEBUG, "mesh: pri/sec channels switched");
 288                 frequency = freq->freq;
 289         }
 290         wpa_s->assoc_freq = frequency;
 291         wpa_s->current_ssid = ssid;
 292
 293         /* setup an AP config for auth processing */
 294         conf = hostapd_config_defaults();
 295         if (!conf)
 296                 goto out_free;
 297
 298         bss->conf = *conf->bss;
 299         bss->conf->start_disabled = 1;
 300         bss->conf->mesh = MESH_ENABLED;
 301         bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
 302
 303         if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
 304                              wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
 305                 conf->ieee80211h = 1;
 306                 conf->ieee80211d = 1;
 307                 conf->country[0] = wpa_s->conf->country[0];
 308                 conf->country[1] = wpa_s->conf->country[1];
 309                 conf->country[2] = ' ';
 310         }
 311
 312         bss->iconf = conf;
 313         ifmsh->conf = conf;
 314
 315         ifmsh->bss[0]->max_plinks = wpa_s->conf->max_peer_links;
 316         ifmsh->bss[0]->dot11RSNASAERetransPeriod =
 317                 wpa_s->conf->dot11RSNASAERetransPeriod;
 318         os_strlcpy(bss->conf->iface, wpa_s->ifname, sizeof(bss->conf->iface));
 319
 320         mconf = mesh_config_create(wpa_s, ssid);
 321         if (!mconf)
 322                 goto out_free;
 323         ifmsh->mconf = mconf;
 324
 325         /* need conf->hw_mode for supported rates. */
 326         conf->hw_mode = ieee80211_freq_to_chan(frequency, &conf->channel);
 327         if (conf->hw_mode == NUM_HOSTAPD_MODES) {
 328                 wpa_printf(MSG_ERROR, "Unsupported mesh mode frequency: %d MHz",
 329                            frequency);
 330                 goto out_free;
 331         }
 332         if (ssid->ht40)
 333                 conf->secondary_channel = ssid->ht40;
 334         if (conf->hw_mode == HOSTAPD_MODE_IEEE80211A && ssid->vht) {
 335                 if (ssid->max_oper_chwidth != DEFAULT_MAX_OPER_CHWIDTH)
 336                         conf->vht_oper_chwidth = ssid->max_oper_chwidth;
 337                 switch (conf->vht_oper_chwidth) {
 338                 case VHT_CHANWIDTH_80MHZ:
 339                 case VHT_CHANWIDTH_80P80MHZ:
 340                         ieee80211_freq_to_chan(
 341                                 frequency,
 342                                 &conf->vht_oper_centr_freq_seg0_idx);
 343                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 344                         break;
 345                 case VHT_CHANWIDTH_160MHZ:
 346                         ieee80211_freq_to_chan(
 347                                 frequency,
 348                                 &conf->vht_oper_centr_freq_seg0_idx);
 349                         conf->vht_oper_centr_freq_seg0_idx += ssid->ht40 * 2;
 350                         conf->vht_oper_centr_freq_seg0_idx += 40 / 5;
 351                         break;
 352                 }
 353                 ieee80211_freq_to_chan(ssid->vht_center_freq2,
 354                                        &conf->vht_oper_centr_freq_seg1_idx);
 355         }
 356
 357         if (ssid->mesh_basic_rates == NULL) {
 358                 /*
 359                  * XXX: Hack! This is so an MPM which correctly sets the ERP
 360                  * mandatory rates as BSSBasicRateSet doesn't reject us. We
 361                  * could add a new hw_mode HOSTAPD_MODE_IEEE80211G_ERP, but
 362                  * this is way easier. This also makes our BSSBasicRateSet
 363                  * advertised in beacons match the one in peering frames, sigh.
 364                  */
 365                 if (conf->hw_mode == HOSTAPD_MODE_IEEE80211G) {
 366                         conf->basic_rates = os_memdup(basic_rates_erp,
 367                                                       sizeof(basic_rates_erp));
 368                         if (!conf->basic_rates)
 369                                 goto out_free;
 370                 }
 371         } else {
 372                 rate_len = 0;
 373                 while (1) {
 374                         if (ssid->mesh_basic_rates[rate_len] < 1)
 375                                 break;
 376                         rate_len++;
 377                 }
 378                 conf->basic_rates = os_calloc(rate_len + 1, sizeof(int));
 379                 if (conf->basic_rates == NULL)
 380                         goto out_free;
 381                 os_memcpy(conf->basic_rates, ssid->mesh_basic_rates,
 382                           rate_len * sizeof(int));
 383                 conf->basic_rates[rate_len] = -1;
 384         }
 385
 386         /* Handle pri/sec switch frequency within AP configuration parameter
 387          * generation without changing the stored network profile in the end. */
 388         saved_freq = ssid->frequency;
 389         ssid->frequency = frequency;
 390         wpa_supplicant_conf_ap_ht(wpa_s, ssid, conf);
 391         ssid->frequency = saved_freq;
 392
 393         if (wpa_drv_init_mesh(wpa_s)) {
 394                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh in driver");
 395                 return -1;
 396         }
 397
 398         if (hostapd_setup_interface(ifmsh)) {
 399                 wpa_printf(MSG_ERROR,
 400                            "Failed to initialize hostapd interface for mesh");
 401                 return -1;
 402         }
 403
 404         return 0;
 405 out_free:
 406         wpa_supplicant_mesh_deinit(wpa_s);
 407         return -ENOMEM;
 408 }
 409
 410
 411 void wpa_mesh_notify_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 412                           const u8 *ies, size_t ie_len)
 413 {
 414         struct ieee802_11_elems elems;
 415
 416         wpa_msg(wpa_s, MSG_INFO,
 417                 "new peer notification for " MACSTR, MAC2STR(addr));
 418
 419         if (ieee802_11_parse_elems(ies, ie_len, &elems, 0) == ParseFailed) {
 420                 wpa_msg(wpa_s, MSG_INFO, "Could not parse beacon from " MACSTR,
 421                         MAC2STR(addr));
 422                 return;
 423         }
 424         wpa_mesh_new_mesh_peer(wpa_s, addr, &elems);
 425 }
 426
 427
 428 void wpa_supplicant_mesh_add_scan_ie(struct wpa_supplicant *wpa_s,
 429                                      struct wpabuf **extra_ie)
 430 {
 431         /* EID + 0-length (wildcard) mesh-id */
 432         size_t ielen = 2;
 433
 434         if (wpabuf_resize(extra_ie, ielen) == 0) {
 435                 wpabuf_put_u8(*extra_ie, WLAN_EID_MESH_ID);
 436                 wpabuf_put_u8(*extra_ie, 0);
 437         }
 438 }
 439
 440
 441 int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
 442                              struct wpa_ssid *ssid)
 443 {
 444         struct wpa_driver_mesh_join_params *params = os_zalloc(sizeof(*params));
 445         int ret = 0;
 446
 447         if (!ssid || !ssid->ssid || !ssid->ssid_len || !ssid->frequency ||
 448             !params) {
 449                 ret = -ENOENT;
 450                 os_free(params);
 451                 goto out;
 452         }
 453
 454         wpa_supplicant_mesh_deinit(wpa_s);
 455
 456         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 457         wpa_s->group_cipher = WPA_CIPHER_NONE;
 458         wpa_s->mgmt_group_cipher = 0;
 459
 460         params->meshid = ssid->ssid;
 461         params->meshid_len = ssid->ssid_len;
 462         ibss_mesh_setup_freq(wpa_s, ssid, &params->freq);
 463         wpa_s->mesh_ht_enabled = !!params->freq.ht_enabled;
 464         wpa_s->mesh_vht_enabled = !!params->freq.vht_enabled;
 465         if (params->freq.ht_enabled && params->freq.sec_channel_offset)
 466                 ssid->ht40 = params->freq.sec_channel_offset;
 467
 468         if (wpa_s->mesh_vht_enabled) {
 469                 ssid->vht = 1;
 470                 ssid->vht_center_freq1 = params->freq.center_freq1;
 471                 switch (params->freq.bandwidth) {
 472                 case 80:
 473                         if (params->freq.center_freq2) {
 474                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
 475                                 ssid->vht_center_freq2 =
 476                                         params->freq.center_freq2;
 477                         } else {
 478                                 ssid->max_oper_chwidth = VHT_CHANWIDTH_80MHZ;
 479                         }
 480                         break;
 481                 case 160:
 482                         ssid->max_oper_chwidth = VHT_CHANWIDTH_160MHZ;
 483                         break;
 484                 default:
 485                         ssid->max_oper_chwidth = VHT_CHANWIDTH_USE_HT;
 486                         break;
 487                 }
 488         }
 489         if (ssid->beacon_int > 0)
 490                 params->beacon_int = ssid->beacon_int;
 491         else if (wpa_s->conf->beacon_int > 0)
 492                 params->beacon_int = wpa_s->conf->beacon_int;
 493         if (ssid->dtim_period > 0)
 494                 params->dtim_period = ssid->dtim_period;
 495         else if (wpa_s->conf->dtim_period > 0)
 496                 params->dtim_period = wpa_s->conf->dtim_period;
 497         params->conf.max_peer_links = wpa_s->conf->max_peer_links;
 498         if (ssid->mesh_rssi_threshold < DEFAULT_MESH_RSSI_THRESHOLD) {
 499                 params->conf.rssi_threshold = ssid->mesh_rssi_threshold;
 500                 params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD;
 501         }
 502
 503         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 504                 params->flags |= WPA_DRIVER_MESH_FLAG_SAE_AUTH;
 505                 params->flags |= WPA_DRIVER_MESH_FLAG_AMPE;
 506                 wpa_s->conf->user_mpm = 1;
 507         }
 508
 509         if (wpa_s->conf->user_mpm) {
 510                 params->flags |= WPA_DRIVER_MESH_FLAG_USER_MPM;
 511                 params->conf.auto_plinks = 0;
 512         } else {
 513                 params->flags |= WPA_DRIVER_MESH_FLAG_DRIVER_MPM;
 514                 params->conf.auto_plinks = 1;
 515         }
 516         params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
 517
 518         os_free(wpa_s->mesh_params);
 519         wpa_s->mesh_params = params;
 520         if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
 521                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
 522                 wpa_drv_leave_mesh(wpa_s);
 523                 ret = -1;
 524                 goto out;
 525         }
 526
 527         ret = wpas_mesh_complete(wpa_s);
 528 out:
 529         return ret;
 530 }
 531
 532
 533 int wpa_supplicant_leave_mesh(struct wpa_supplicant *wpa_s)
 534 {
 535         int ret = 0;
 536
 537         wpa_msg(wpa_s, MSG_INFO, "leaving mesh");
 538
 539         /* Need to send peering close messages first */
 540         wpa_supplicant_mesh_deinit(wpa_s);
 541
 542         ret = wpa_drv_leave_mesh(wpa_s);
 543         if (ret)
 544                 wpa_msg(wpa_s, MSG_ERROR, "mesh leave error=%d", ret);
 545
 546         wpa_drv_set_operstate(wpa_s, 1);
 547
 548         return ret;
 549 }
 550
 551
 552 static int mesh_attr_text(const u8 *ies, size_t ies_len, char *buf, char *end)
 553 {
 554         struct ieee802_11_elems elems;
 555         char *mesh_id, *pos = buf;
 556         u8 *bss_basic_rate_set;
 557         int bss_basic_rate_set_len, ret, i;
 558
 559         if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed)
 560                 return -1;
 561
 562         if (elems.mesh_id_len < 1)
 563                 return 0;
 564
 565         mesh_id = os_malloc(elems.mesh_id_len + 1);
 566         if (mesh_id == NULL)
 567                 return -1;
 568
 569         os_memcpy(mesh_id, elems.mesh_id, elems.mesh_id_len);
 570         mesh_id[elems.mesh_id_len] = '\0';
 571         ret = os_snprintf(pos, end - pos, "mesh_id=%s\n", mesh_id);
 572         os_free(mesh_id);
 573         if (os_snprintf_error(end - pos, ret))
 574                 return pos - buf;
 575         pos += ret;
 576
 577         if (elems.mesh_config_len > 6) {
 578                 ret = os_snprintf(pos, end - pos,
 579                                   "active_path_selection_protocol_id=0x%02x\n"
 580                                   "active_path_selection_metric_id=0x%02x\n"
 581                                   "congestion_control_mode_id=0x%02x\n"
 582                                   "synchronization_method_id=0x%02x\n"
 583                                   "authentication_protocol_id=0x%02x\n"
 584                                   "mesh_formation_info=0x%02x\n"
 585                                   "mesh_capability=0x%02x\n",
 586                                   elems.mesh_config[0], elems.mesh_config[1],
 587                                   elems.mesh_config[2], elems.mesh_config[3],
 588                                   elems.mesh_config[4], elems.mesh_config[5],
 589                                   elems.mesh_config[6]);
 590                 if (os_snprintf_error(end - pos, ret))
 591                         return pos - buf;
 592                 pos += ret;
 593         }
 594
 595         bss_basic_rate_set = os_malloc(elems.supp_rates_len +
 596                 elems.ext_supp_rates_len);
 597         if (bss_basic_rate_set == NULL)
 598                 return -1;
 599
 600         bss_basic_rate_set_len = 0;
 601         for (i = 0; i < elems.supp_rates_len; i++) {
 602                 if (elems.supp_rates[i] & 0x80) {
 603                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 604                                 (elems.supp_rates[i] & 0x7f) * 5;
 605                 }
 606         }
 607         for (i = 0; i < elems.ext_supp_rates_len; i++) {
 608                 if (elems.ext_supp_rates[i] & 0x80) {
 609                         bss_basic_rate_set[bss_basic_rate_set_len++] =
 610                                 (elems.ext_supp_rates[i] & 0x7f) * 5;
 611                 }
 612         }
 613         if (bss_basic_rate_set_len > 0) {
 614                 ret = os_snprintf(pos, end - pos, "bss_basic_rate_set=%d",
 615                                   bss_basic_rate_set[0]);
 616                 if (os_snprintf_error(end - pos, ret))
 617                         goto fail;
 618                 pos += ret;
 619
 620                 for (i = 1; i < bss_basic_rate_set_len; i++) {
 621                         ret = os_snprintf(pos, end - pos, " %d",
 622                                           bss_basic_rate_set[i]);
 623                         if (os_snprintf_error(end - pos, ret))
 624                                 goto fail;
 625                         pos += ret;
 626                 }
 627
 628                 ret = os_snprintf(pos, end - pos, "\n");
 629                 if (os_snprintf_error(end - pos, ret))
 630                         goto fail;
 631                 pos += ret;
 632         }
 633 fail:
 634         os_free(bss_basic_rate_set);
 635
 636         return pos - buf;
 637 }
 638
 639
 640 int wpas_mesh_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
 641                                char *end)
 642 {
 643         return mesh_attr_text(ies, ies_len, buf, end);
 644 }
 645
 646
 647 static int wpas_mesh_get_ifname(struct wpa_supplicant *wpa_s, char *ifname,
 648                                 size_t len)
 649 {
 650         char *ifname_ptr = wpa_s->ifname;
 651         int res;
 652
 653         res = os_snprintf(ifname, len, "mesh-%s-%d", ifname_ptr,
 654                           wpa_s->mesh_if_idx);
 655         if (os_snprintf_error(len, res) ||
 656             (os_strlen(ifname) >= IFNAMSIZ &&
 657              os_strlen(wpa_s->ifname) < IFNAMSIZ)) {
 658                 /* Try to avoid going over the IFNAMSIZ length limit */
 659                 res = os_snprintf(ifname, len, "mesh-%d", wpa_s->mesh_if_idx);
 660                 if (os_snprintf_error(len, res))
 661                         return -1;
 662         }
 663         wpa_s->mesh_if_idx++;
 664         return 0;
 665 }
 666
 667
 668 int wpas_mesh_add_interface(struct wpa_supplicant *wpa_s, char *ifname,
 669                             size_t len)
 670 {
 671         struct wpa_interface iface;
 672         struct wpa_supplicant *mesh_wpa_s;
 673         u8 addr[ETH_ALEN];
 674
 675         if (ifname[0] == '\0' && wpas_mesh_get_ifname(wpa_s, ifname, len) < 0)
 676                 return -1;
 677
 678         if (wpa_drv_if_add(wpa_s, WPA_IF_MESH, ifname, NULL, NULL, NULL, addr,
 679                            NULL) < 0) {
 680                 wpa_printf(MSG_ERROR,
 681                            "mesh: Failed to create new mesh interface");
 682                 return -1;
 683         }
 684         wpa_printf(MSG_INFO, "mesh: Created virtual interface %s addr "
 685                    MACSTR, ifname, MAC2STR(addr));
 686
 687         os_memset(&iface, 0, sizeof(iface));
 688         iface.ifname = ifname;
 689         iface.driver = wpa_s->driver->name;
 690         iface.driver_param = wpa_s->conf->driver_param;
 691         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 692
 693         mesh_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
 694         if (!mesh_wpa_s) {
 695                 wpa_printf(MSG_ERROR,
 696                            "mesh: Failed to create new wpa_supplicant interface");
 697                 wpa_drv_if_remove(wpa_s, WPA_IF_MESH, ifname);
 698                 return -1;
 699         }
 700         mesh_wpa_s->mesh_if_created = 1;
 701         return 0;
 702 }
 703
 704
 705 int wpas_mesh_peer_remove(struct wpa_supplicant *wpa_s, const u8 *addr)
 706 {
 707         return mesh_mpm_close_peer(wpa_s, addr);
 708 }
 709
 710
 711 int wpas_mesh_peer_add(struct wpa_supplicant *wpa_s, const u8 *addr,
 712                        int duration)
 713 {
 714         return mesh_mpm_connect_peer(wpa_s, addr, duration);
 715 }